Which dongle belongs to which controller?

I couldn’t put a proper title because of the character limit but I have a few SNES, Genesis, TG16, etc controllers for my MiSTeR. However, someone unplugged them so now I have no clue which is which and I’ve been having issues with buttons registering (ie: the d-pad might work but not the buttons).

Is there a simple way to figure this out?

Thank you