How to add your own preset to the classic wp editor?

Adding in html editor mode

add_action( 'admin_print_footer_scripts', 'theme_add_quicktags', 99 );
function theme_add_quicktags() {
	if ( ! wp_script_is('quicktags') )
		return;

	?>
	<script>
	document.addEventListener( 'DOMContentLoaded', function(){

		QTags.addButton( 'r4_div_blue', 'div_blue', '<div class="color-blue">', '</div>', 'd', 'Div blue', 1 );
		QTags.addButton( 'r4_h3_blue', 'h3_blue', '<h3 class="color-blue">', '</h3>', 'h', 'H3 blue', 2 );
		QTags.addButton( 'r4_ol_lg', 'ol_lg', '<ol class="lg-list">', '</ol>', 'o', 'Ol lg', 3 );
		
	} );
	</script>
	<?php
}
//QTags.addButton( id, display, arg1, arg2, access_key, title, priority, instance );

Adding in visual editor mode (buttons)
tinymce-buttons.js

(function() {
    tinymce.create('tinymce.plugins.theme_buttons', {
        init : function(ed, url) {
            ed.addButton('r4_div_blue', {
                title : 'Div blue',
                icon: 'mce-ico mce-i-checkmark', // использование иконки Dashicons
                onclick : function() {
                    ed.execCommand('mceInsertContent', false, '<div class="color-blue"></div>');
					ed.label = 'Div blue';
                }
            });
            ed.addButton('r4_h3_blue', {
                title : 'H3 blue',
                icon: 'mce-ico mce-i-checkmark', // использование иконки Dashicons
                onclick : function() {
                    ed.execCommand('mceInsertContent', false, '<h3 class="color-blue"></h3>');
					ed.label = 'H3 blue';
                }
            });
            ed.addButton('r4_ol_lg', {
                title : 'Ol lg',
                icon: 'mce-ico mce-i-checkmark', // использование иконки Dashicons
                onclick : function() {
                    ed.execCommand('mceInsertContent', false, '<ol class="lg-list"><li></li></ol>');
					ed.label = 'Ol lg';
                }
            });
        }
    });
    tinymce.PluginManager.add('theme_buttons', tinymce.plugins.theme_buttons);
})();

function.php

function theme_tinymce_plugin($plugin_array) {
    $plugin_array['theme_buttons'] = get_template_directory_uri() . '/assets/js/tinymce-buttons.js?v=17'; // путь к вашему JS файлу
    return $plugin_array;
}

function theme_register_buttons($buttons) {
    array_push($buttons, 'r4_div_blue', 'r4_h3_blue', 'r4_ol_lg');
    return $buttons;
}

Question: how to add to the drop-down list (see screenshot)https://prnt.sc/1MmEGcEvahOx