Index: wp-includes/class-wp-role.php
===================================================================
--- wp-includes/class-wp-role.php	(revision 44730)
+++ wp-includes/class-wp-role.php	(working copy)
@@ -22,6 +22,14 @@
 	public $name;
 
 	/**
+	 * Role display name.
+	 *
+	 * @since 5.x
+	 * @var string
+	 */
+	public $display_name;
+
+	/**
 	 * List of capabilities the role contains.
 	 *
 	 * @since 2.0.0
@@ -43,6 +51,11 @@
 	public function __construct( $role, $capabilities ) {
 		$this->name         = $role;
 		$this->capabilities = $capabilities;
+
+		$names = wp_roles()->get_names();
+		if ( isset( $names[ $role ] ) ) {
+			$this->display_name = $names[ $role ];
+		}
 	}
 
 	/**