by Antonio Augusto on WordPress.org

Menu items going down.
The “Keep New Admin Menu Items in Bottom” WordPress plugin maintains a tidy and organized admin menu by ensuring that newly added menu items appear at the bottom of the menu. This helps maintain a consistent and organized admin interface, keeping your default WordPress menu items in their familiar positions.
You can modify the default menu items using the knamib_default_slugs filter:
// List menu slugs
add_action('admin_notices', function () {
global $menu;
?>