Yeah, with #1 after I saw others mention it, I vaguely remembered that Subaru wears gloves (I've seen the X anime but it was never a major fandom for me, though it's one of my sister's OTPs.)

And yes, I think it helps if you know someone's fandoms well; it's definitely easier to work backwards and go "I know this is a ship of theirs, so which one could it be?"