Admin check if Tinymce

I’m hoping Andrew Ozz might see this… but I’ll welcome anyone’s input, respectfully 🙂

Is there a way to check (in admin area) if there is a tinymce editor being initialized somewhere on that page?

The idea… being able to register and enqueue scripts and styles on all admin pages ONLY when a tinymce editor is used.

This may include post, page, add new post, add new page, custom post types, and any other admin page (including plugins and themes) where a tinymce editor is used.

I know this function will determine if the admin screen is a post or page:

add_action('admin_print_styles', 'add_my_tinymce_button_css');
function add_my_tinymce_button_css() {

    // Get current screen and determine if we are using the editor
    $screen = get_current_screen();
    // If we are editing (adding new) post or page
    if ( $screen->id == 'page' || $screen->id == 'post' ) {

        // Register our stylesheet
        // Note: The stylesheet resides in our plugin directory/css/admin.css
        // You may change this to suit your preferences
        wp_register_style('my_tinymce_button_css', plugin_dir_url( __FILE__ ) . ('/css/admin.css'), array());

        // Now we enqueue our stylesheet
        wp_enqueue_style('my_tinymce_button_css');

        // Depending on when you fire things, you may/may not need to enqueue 'dashicons'
        wp_enqueue_style('dashicons');
    }
}

However… it doesn’t take into account any admin pages where tinymce may be used (such as in a plugin or theme admin area). I know I can add the pages manually, but I’d have to search every plugin and theme. Impractical.

Is there something like is_tinymce_enqueued() that can be fired from within the admin_print_styles() filter?