Category Page – List of other categories these are in

Hello,

I haven’t had any luck figuring this out on my own. But I have a category page, showing all posts in category 6.
These posts are also organized by their Theme – Theme is category 97 and many posts are also in a subcategory of Theme.
On the left menu of my Category Page (cat 6) I want to list which subcategories of Theme (97) are used in these posts.

I’ve tried, with no luck, many different versions of this:

<?php wp_list_categories('orderby=count&include=6&child_of=97&style=none'); ?>

Am I on the right track? Is this possible?

Thank you for any help!!