Add User Role based on the CPT

functions.php

<?php

/**
 * Registers the `news` post type.
 */
function news_cpt(): void {

	$labels = [
		'name'                  => __( 'News', 'text-domain' ),
		'singular_name'         => __( 'News', 'text-domain' ),
		'all_items'             => __( 'All News', 'text-domain' ),
		'archives'              => __( 'News Archives', 'text-domain' ),
		'attributes'            => __( 'News Attributes', 'text-domain' ),
		'insert_into_item'      => __( 'Insert into News', 'text-domain' ),
		'uploaded_to_this_item' => __( 'Uploaded to this News', 'text-domain' ),
		'featured_image'        => _x( 'Featured Image', 'News', 'text-domain' ),
		'set_featured_image'    => _x( 'Set featured image', 'News', 'text-domain' ),
		'remove_featured_image' => _x( 'Remove featured image', 'News', 'text-domain' ),
		'use_featured_image'    => _x( 'Use as featured image', 'News', 'text-domain' ),
		'filter_items_list'     => __( 'Filter News list', 'text-domain' ),
		'items_list_navigation' => __( 'News list navigation', 'text-domain' ),
		'items_list'            => __( 'News list', 'text-domain' ),
		'new_item'              => __( 'New News', 'text-domain' ),
		'add_new'               => __( 'Add New', 'text-domain' ),
		'add_new_item'          => __( 'Add New News', 'text-domain' ),
		'edit_item'             => __( 'Edit News', 'text-domain' ),
		'view_item'             => __( 'View News', 'text-domain' ),
		'view_items'            => __( 'View News', 'text-domain' ),
		'search_items'          => __( 'Search News', 'text-domain' ),
		'not_found'             => __( 'No News found', 'text-domain' ),
		'not_found_in_trash'    => __( 'No News found in trash', 'text-domain' ),
		'parent_item_colon'     => __( 'Parent News:', 'text-domain' ),
		'menu_name'             => __( 'News', 'text-domain' ),
	];

	$args = [
		'labels'            => $labels,
		'public'            => true,
		'hierarchical'      => false,
		'show_ui'           => true,
		'show_in_nav_menus' => true,
		'supports'          => [ 'title', 'editor', 'excerpt', 'author', 'thumbnail' ],
		'has_archive'       => false,
		'query_var'         => true,
		'menu_position'     => null,
		'menu_icon'         => 'dashicons-admin-post',
		'show_in_rest'      => true,
		'capability_type' => 'news',
		'map_meta_cap' => true, // Important for mapping custom capabilities
		'capabilities' => [
			'edit_post' => 'edit_news',
			'read_post' => 'read_news',
			'delete_post' => 'delete_news',
			'edit_posts' => 'edit_newss',
			'edit_others_posts' => 'edit_others_newss',
			'publish_posts' => 'publish_newss',
			'read_private_posts' => 'read_private_newss',
		],
	];

	register_post_type( 'news', $args );

}
add_action( 'init', 'news_cpt' );

/**
 * Add news editor role.
 */
function add_news_editor_role() {
	// Add a new role with 'read' capability.
	add_role('news_editor', 'News Editor', array('read' => true));

	// Get the roles object
	$roles = array( 'administrator', 'news_editor' );

	// Capabilities to add
	$caps = array(
		'edit_news',
		'read_news',
		'delete_news',
		'edit_newss',
		'edit_others_newss',
		'publish_newss',
		'read_private_newss',
	);

	foreach ($roles as $the_role) {
		$role = get_role($the_role);

		foreach ($caps as $cap) {
			// Add new capabilities to Administrator and News Editor roles
			$role->add_cap($cap);
		}
	}
}
add_action('init', 'add_news_editor_role', 11 );