WordPress plugin for A-Z Categories page

Hi all,

I’m trying to find a plugin to list specific categories and child categories in a page for my blog but I don’t find the appropiate plugin.

I’d like to have something like this: https://www.mavensearch.com/shopping/s_subjects_all.htm

A page where I have an A-Z index on top and then a list of them

For example, if I have this posts categories

Concert
-Artists
–Ana Smith
–Anthony Williams
–Barry White
–…

So, imagine I want to have a tab/page with ‘Artists’ where to show all the artists I already have assigned by category in posts.

A B C D E F …… Z

A
Anna Smith Anthony Williams

B
Barry White

It would be a perfect example.

I was trying with AZIndex (https://azindex.englishmike.net/wordpress/wordpress/) but it seems that always shows the posts titles and I’m interested to show only the category names.

So, please if you know how to configure this plugin to have this behaviour or you have any other plugin recommendation It will be very useful for me.

Thanks for helping!!!