Looking for a directory theme (or plugins) for products and not city - For affiliate marketing

Hi all. I’m looking for help to lead me in the right direction.

Project will be items, not city/state businesses. Most directory themes have the options Im looking for but I dont want the search to be closest to you, rather by item and sub category.

Example (not giving away real “items”)

Main page would be main categories. Search would be main and subs.

Is this a build only option or is there some theme I can play with?

Thanks for any advice as I’m newer to website building.