Omgosh you know what's funny. As far as simping goes- in my oc ships, I'd probably say my friends oc's end up being the bigger simps XDc (or more specifically dia's lmaoo. lbh) But if I had to choose on my end- That might be Lars. Lmao, he developed the fattest crush on Marcus first when they were teens. But then kept it to himself well into adult-hood. Marcus annoys the shit out of him, but he's also nuts about him and they're each others best friend.
And then if I had to pick on the other end - Roger (dia's oc obvi) would by my vote for biggest simp. He is ride or die for Jules.