@LadyDragonfly But this made me think: what (non-name) pro/noun is the most gender-neutral if someone walking in front of you drops something and you want to get their attention. (added context: the observing person behind cannot move fast to catch-up).

I'd like to think I could quickly formulate something like "hey you with the shoulder bag and blue sneakers - you dropped your folder!" - but I know I'd probably just blurt out a gendered pronoun based on their appearance.