It's still Pacquiao. He beats up and hurts everyone he fights (exception of floyd obviously) and he's consostently been fighting guys much bigger than him. Imagine what he'd be doing to guys at 135/140!
Wlad overall - HW will always be the baddest man on the planet Kovalev, and GGG after that. Some guys are CW who will make an arguments in the near future as well.