I this case I think it is within margin though. Manning, brady, judd, and partridge are the only ones only americans would really know/have a chance to know. (I thought wayan too but looked it up and they are familiar enough, I just didnt know the name)
So 4/24 questions that are undoable when you are not an american is not too bad imo. Most of these might be "american answers" but are known outside america. So that is fine.
And the only one I really know by face is the one you havent listed haha. Damon wayan (though I ve seen seen scary movie, or atleast enough clips so it feels like I ve seen it, so I perhaps should recognize marlon aswell)