Honestly, I have been racking my brain and I can't think of any. I think I have an incredibly specific taste when it comes to M/f stuff but I can never put my finger on exactly what activates the neurons. That said I do quite like Ridge by Cherry (aka @barabait), he's a big gross hairy bear dude. Only vaguely size-adjacent (in that he's realistically tall compared to the women he eats) but I like that guy. Also a fan of Cliff by the same artist who's a lot more "fatherly".