After searching in the Dune photos, I thought that any category available for a title appeared at the top of the search.
(Noticed that Denis Villeneuve's Dune has more categories than any other title I had seen previously. 5 categories are listed in the search feature: Still, pre-prod, promo, official screen caps, bts)
Looking for Deadwood (2004) photos, search features offered 3 categories: Promo, stills and bts. I've missed a photo that was a promotional art.
Checked Dune, and there's promotional art as well. Despite 5 categories available for Dune, promotional art isn't one of them.
Is there a way to search for promotional art?
Also, how do we know all the categories available for a title?