wp-admin/custom-background.php
class Custom_Background

wp-admin/custom-header.php
class Custom_Image_Header

wp-admin/includes/class-automatic-upgrader-skin.php
class Automatic_Upgrader_Skin extends WP_Upgrader_Skin

wp-admin/includes/class-bulk-plugin-upgrader-skin.php
class Bulk_Plugin_Upgrader_Skin extends Bulk_Upgrader_Skin

wp-admin/includes/class-bulk-theme-upgrader-skin.php
class Bulk_Theme_Upgrader_Skin extends Bulk_Upgrader_Skin

wp-admin/includes/class-bulk-upgrader-skin.php
class Bulk_Upgrader_Skin extends WP_Upgrader_Skin

wp-admin/includes/class-core-upgrader.php
class Core_Upgrader extends WP_Upgrader

wp-admin/includes/class-file-upload-upgrader.php
class File_Upload_Upgrader

wp-admin/includes/class-ftp-pure.php
class ftp extends ftp_base

wp-admin/includes/class-ftp-sockets.php
class ftp extends ftp_base

wp-admin/includes/class-ftp.php
class ftp_base

wp-admin/includes/class-language-pack-upgrader-skin.php
class Language_Pack_Upgrader_Skin extends WP_Upgrader_Skin

wp-admin/includes/class-language-pack-upgrader.php
class Language_Pack_Upgrader extends WP_Upgrader

wp-admin/includes/class-plugin-installer-skin.php
class Plugin_Installer_Skin extends WP_Upgrader_Skin

wp-admin/includes/class-plugin-upgrader-skin.php
class Plugin_Upgrader_Skin extends WP_Upgrader_Skin

wp-admin/includes/class-plugin-upgrader.php
class Plugin_Upgrader extends WP_Upgrader

wp-admin/includes/class-theme-installer-skin.php
class Theme_Installer_Skin extends WP_Upgrader_Skin

wp-admin/includes/class-theme-upgrader-skin.php
class Theme_Upgrader_Skin extends WP_Upgrader_Skin

wp-admin/includes/class-theme-upgrader.php
class Theme_Upgrader extends WP_Upgrader

wp-admin/includes/class-walker-category-checklist.php
class Walker_Category_Checklist extends Walker

wp-admin/includes/class-walker-nav-menu-checklist.php
class Walker_Nav_Menu_Checklist extends Walker_Nav_Menu

wp-admin/includes/class-walker-nav-menu-edit.php
class Walker_Nav_Menu_Edit extends Walker_Nav_Menu

wp-admin/includes/class-wp-automatic-upgrader.php
class WP_Automatic_Updater

wp-admin/includes/class-wp-comments-list-table.php
class WP_Comments_List_Table extends WP_List_Table

wp-admin/includes/class-wp-filesystem-base.php
class WP_Filesystem_Base

wp-admin/includes/class-wp-filesystem-direct.php
class WP_Filesystem_Direct extends WP_Filesystem_Base

wp-admin/includes/class-wp-filesystem-ftpext.php
class WP_Filesystem_FTPext extends WP_Filesystem_Base

wp-admin/includes/class-wp-filesystem-ftpsockets.php
class WP_Filesystem_ftpsockets extends WP_Filesystem_Base

wp-admin/includes/class-wp-filesystem-ssh2.php
class WP_Filesystem_SSH2 extends WP_Filesystem_Base

wp-admin/includes/class-wp-importer.php
class WP_Importer

wp-admin/includes/class-wp-links-list-table.php
class WP_Links_List_Table extends WP_List_Table

wp-admin/includes/class-wp-list-table.php
class WP_List_Table

wp-admin/includes/class-wp-media-list-table.php
class WP_Media_List_Table extends WP_List_Table

wp-admin/includes/class-wp-ms-sites-list-table.php
class WP_MS_Sites_List_Table extends WP_List_Table

wp-admin/includes/class-wp-ms-themes-list-table.php
class WP_MS_Themes_List_Table extends WP_List_Table

wp-admin/includes/class-wp-ms-users-list-table.php
class WP_MS_Users_List_Table extends WP_List_Table

wp-admin/includes/class-wp-plugin-install-list-table.php
class WP_Plugin_Install_List_Table extends WP_List_Table

wp-admin/includes/class-wp-plugins-list-table.php
class WP_Plugins_List_Table extends WP_List_Table

wp-admin/includes/class-wp-post-comments-list-table.php
class WP_Post_Comments_List_Table extends WP_Comments_List_Table

wp-admin/includes/class-wp-posts-list-table.php
class WP_Posts_List_Table extends WP_List_Table

wp-admin/includes/class-wp-press-this.php
class WP_Press_This

wp-admin/includes/class-wp-site-icon.php
class WP_Site_Icon

wp-admin/includes/class-wp-terms-list-table.php
class WP_Terms_List_Table extends WP_List_Table

wp-admin/includes/class-wp-theme-install-list-table.php
class WP_Theme_Install_List_Table extends WP_Themes_List_Table

wp-admin/includes/class-wp-themes-list-table.php
class WP_Themes_List_Table extends WP_List_Table

wp-admin/includes/class-wp-upgrader-skin.php
class WP_Upgrader_Skin

wp-admin/includes/class-wp-upgrader.php
class WP_Upgrader

wp-admin/includes/class-wp-users-list-table.php
class WP_Users_List_Table extends WP_List_Table

wp-admin/includes/deprecated.php
class WP_User_Search

wp-admin/includes/list-table.php
class _WP_List_Table_Compat extends WP_List_Table

wp-includes/cache.php
class WP_Object_Cache

wp-includes/class-feed.php
class WP_Feed_Cache extends SimplePie_Cache
class WP_Feed_Cache_Transient
class WP_SimplePie_File extends SimplePie_File
class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize

wp-includes/class-http.php
class WP_Http

wp-includes/class-IXR.php
class IXR_Value
class IXR_Date

wp-includes/class-oembed.php
class WP_oEmbed

wp-includes/class-phpass.php
class PasswordHash

wp-includes/class-pop3.php
class POP3

wp-includes/class-walker-category-dropdown.php
class Walker_CategoryDropdown extends Walker

wp-includes/class-walker-category.php
class Walker_Category extends Walker

wp-includes/class-walker-comment.php
class Walker_Comment extends Walker

wp-includes/class-walker-page-dropdown.php
class Walker_PageDropdown extends Walker

wp-includes/class-walker-page.php
class Walker_Page extends Walker

wp-includes/class-wp-admin-bar.php
class WP_Admin_Bar

wp-includes/class-wp-ajax-response.php
class WP_Ajax_Response

wp-includes/class-wp-comment-query.php
class WP_Comment_Query

wp-includes/class-wp-customize-control.php
class WP_Customize_Control

wp-includes/class-wp-customize-panel.php
class WP_Customize_Panel

wp-includes/class-wp-customize-section.php
class WP_Customize_Section

wp-includes/class-wp-customize-setting.php
class WP_Customize_Setting

wp-includes/class-wp-embed.php
class WP_Embed

wp-includes/class-wp-error.php
class WP_Error

wp-includes/class-wp-http-cookie.php
class WP_Http_Cookie

wp-includes/class-wp-http-curl.php
class WP_Http_Curl

wp-includes/class-wp-http-encoding.php
class WP_Http_Encoding

wp-includes/class-wp-http-ixr-client.php
class WP_HTTP_IXR_Client extends IXR_Client

wp-includes/class-wp-http-proxy.php
class WP_HTTP_Proxy

wp-includes/class-wp-http-response.php
class WP_HTTP_Response

wp-includes/class-wp-http-streams.php
class WP_Http_Streams
class WP_HTTP_Fsockopen extends WP_HTTP_Streams

wp-includes/class-wp-image-editor-gd.php
class WP_Image_Editor_GD extends WP_Image_Editor

wp-includes/class-wp-image-editor-imagick.php
class WP_Image_Editor_Imagick extends WP_Image_Editor

wp-includes/class-wp-image-editor.php
abstract class WP_Image_Editor

wp-includes/class-wp-meta-query.php
class WP_Meta_Query

wp-includes/class-wp-metadata-lazyloader.php
class WP_Metadata_Lazyloader

wp-includes/class-wp-network.php
class WP_Network

wp-includes/class-wp-rewrite.php
class WP_Rewrite

wp-includes/class-wp-role.php
class WP_Role

wp-includes/class-wp-roles.php
class WP_Roles

wp-includes/class-wp-tax-query.php
class WP_Tax_Query

wp-includes/class-wp-user-query.php
class WP_User_Query

wp-includes/class-wp-user.php
class WP_User

wp-includes/class-wp-walker.php
class Walker

wp-includes/class-wp-widget-factory.php
class WP_Widget_Factory

wp-includes/class-wp-widget.php
class WP_Widget

wp-includes/class-wp-xmlrpc-server.php
class wp_xmlrpc_server extends IXR_Server

wp-includes/class-wp.php
class WP
class WP_MatchesMapRegex

wp-includes/class.wp-dependencies.php
class WP_Dependencies
class _WP_Dependency

wp-includes/class.wp-scripts.php
class WP_Scripts extends WP_Dependencies

wp-includes/class.wp-styles.php
class WP_Styles extends WP_Dependencies

wp-includes/customize/class-wp-customize-background-image-control.php
class WP_Customize_Background_Image_Control extends WP_Customize_Image_Control

wp-includes/customize/class-wp-customize-color-control.php
class WP_Customize_Color_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-cropped-image-control.php
class WP_Customize_Cropped_Image_Control extends WP_Customize_Image_Control

wp-includes/customize/class-wp-customize-filter-setting.php
class WP_Customize_Filter_Setting extends WP_Customize_Setting

wp-includes/customize/class-wp-customize-header-image-control.php
class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control

wp-includes/customize/class-wp-customize-image-control.php
class WP_Customize_Image_Control extends WP_Customize_Upload_Control

wp-includes/customize/class-wp-customize-media-control.php
class WP_Customize_Media_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-nav-menu-auto-add-control.php
class WP_Customize_Nav_Menu_Auto_Add_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-nav-menu-control.php
class WP_Customize_Nav_Menu_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-nav-menu-item-control.php
class WP_Customize_Nav_Menu_Item_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
class WP_Customize_Nav_Menu_Item_Setting extends WP_Customize_Setting

wp-includes/customize/class-wp-customize-nav-menu-location-control.php
class WP_Customize_Nav_Menu_Location_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-nav-menu-name-control.php
class WP_Customize_Nav_Menu_Name_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-nav-menu-section.php
class WP_Customize_Nav_Menu_Section extends WP_Customize_Section

wp-includes/customize/class-wp-customize-nav-menu-setting.php
class WP_Customize_Nav_Menu_Setting extends WP_Customize_Setting

wp-includes/customize/class-wp-customize-nav-menus-panel.php
class WP_Customize_Nav_Menus_Panel extends WP_Customize_Panel

wp-includes/customize/class-wp-customize-new-menu-control.php
class WP_Customize_New_Menu_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-new-menu-section.php
class WP_Customize_New_Menu_Section extends WP_Customize_Section

wp-includes/customize/class-wp-customize-partial.php
class WP_Customize_Partial

wp-includes/customize/class-wp-customize-sidebar-section.php
class WP_Customize_Sidebar_Section extends WP_Customize_Section

wp-includes/customize/class-wp-customize-site-icon-control.php
class WP_Customize_Site_Icon_Control extends WP_Customize_Cropped_Image_Control

wp-includes/customize/class-wp-customize-theme-control.php
class WP_Customize_Theme_Control extends WP_Customize_Control

wp-includes/customize/class-wp-customize-themes-section.php
class WP_Customize_Themes_Section extends WP_Customize_Section

wp-includes/customize/class-wp-customize-upload-control.php
class WP_Customize_Upload_Control extends WP_Customize_Media_Control

wp-includes/customize/class-wp-widget-area-customize-control.php
class WP_Widget_Area_Customize_Control extends WP_Customize_Control

wp-includes/customize/class-wp-widget-form-customize-control.php
class WP_Widget_Form_Customize_Control extends WP_Customize_Control

wp-includes/date.php
class WP_Date_Query

wp-includes/locale.php
class WP_Locale

wp-includes/nav-menu-template.php
class Walker_Nav_Menu extends Walker

wp-includes/query.php
class WP_Query

wp-includes/rest-api/class-wp-rest-request.php
class WP_REST_Request implements ArrayAccess

wp-includes/rest-api/class-wp-rest-response.php
class WP_REST_Response extends WP_HTTP_Response

wp-includes/rest-api/class-wp-rest-server.php
class WP_REST_Server

wp-includes/session.php
abstract class WP_Session_Tokens
class WP_User_Meta_Session_Tokens extends WP_Session_Tokens

wp-includes/widgets/class-wp-widget-archives.php
class WP_Widget_Archives extends WP_Widget

wp-includes/widgets/class-wp-widget-calendar.php
class WP_Widget_Calendar extends WP_Widget

wp-includes/widgets/class-wp-widget-categories.php
class WP_Widget_Categories extends WP_Widget

wp-includes/widgets/class-wp-widget-links.php
class WP_Widget_Links extends WP_Widget

wp-includes/widgets/class-wp-widget-meta.php
class WP_Widget_Meta extends WP_Widget

wp-includes/widgets/class-wp-widget-pages.php
class WP_Widget_Pages extends WP_Widget

wp-includes/widgets/class-wp-widget-recent-comments.php
class WP_Widget_Recent_Comments extends WP_Widget

wp-includes/widgets/class-wp-widget-recent-posts.php
class WP_Widget_Recent_Posts extends WP_Widget

wp-includes/widgets/class-wp-widget-rss.php
class WP_Widget_RSS extends WP_Widget

wp-includes/widgets/class-wp-widget-search.php
class WP_Widget_Search extends WP_Widget

wp-includes/widgets/class-wp-widget-tag-cloud.php
class WP_Widget_Tag_Cloud extends WP_Widget

wp-includes/widgets/class-wp-widget-text.php
class WP_Widget_Text extends WP_Widget

wp-includes/wp-db.php
class wpdb

wp-includes/wp-diff.php
class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer
class WP_Text_Diff_Renderer_inline extends Text_Diff_Renderer_inline