I like how Steam puts a detailed info box in the description.
Itch does not even put any info on the game page. Currently.
As you have pointed out, you do not know which boxes where checked in the AI disclosure. And there are no nuances. You cannot formally explain to the users what you do and what you do not do with AI. It is yes or no. Oh, a savy user could do some tricks and try to find out in which sub-ai-tags the game is and in which it is not to recreate the disclosure information. But that is overly complicated and quite obscure. The only tag in the drop down box is no-ai and ai-generated. I guess not many people even know about the other four AI tags. And those do not even have a negation tag. If you were to specifically search all games except the games with AI, and excepting from that the games that only use AI for code, you would need to use this: Sigh. It is confusing. You can't do that. You might exclude specifically the graphics, or sounds or text, but not all 3 and leave code alone.
/games?exclude=tg.ai-generated-graphics
What you can do on your game's description, just spell out the AI usage in detail, so any concerned user can make their own decision.