So many to list…. I think that most of the best gay porn (even if they are straight in their personal lives) butts in recent years belong to the "amateur" site boys vs the studios:
Sean Cody Coleman
Sean Cody Spencer
Corbin Fisher Tanner (aka Phillip Anadarko, Fratmen Marco)
Fratmen Riley (aka Lincoln Hawk)
Trystan Bull
John Magnum
Musclematt Antonio
Musclematt Kyle
Hotgymnast Anthony
Just to name a couple!