Hi,
Maybe you will find this plugin usefull :
https://www.ads-software.com/extend/plugins/tag-functions/
“Once this plugin is enabled, the template function btl_list_categories() will be available. The function will take the same parameters as wp_list_categories()” and will “list all available tags analagous to wp_list_categories()”. It also adds the class=”current-tag” to the current tag ??
I used it for that exact purpose on this web site : https://www.irene.fr
I hope this will help…