Amy Pond > Rose Tyler

Harry/Ginny > Harry/Draco

tbh, those aren't very unpopular

idk. I don't know too much about who fandom, but the latter is in a lot of hp fandom

especially if you're a fan of both

more unpopular one: I hate santittany/britanna/whatever you want to call it

but britana is canon Q_Q

unrequited. I prefer brittany/artie~