It's not like it's an official competition, and it's (probably) not for money, so I imagine you can just wing it and it will be fine. If there's a disagreement you just talk it out, which is also a good way to pass time on a subway.

I'd be more worried about overlap; if there are five women, and one is elderly, I'd rather count it as five queens than four and an ace.

unless you include Balatro hands where Five of a kind, flush five, and flush house are possible hands with some modified card decks.