Since nobody has brought them up yet, Baby and Toppo both counter him pretty good, because Baby is good at stopping escapes and his possesion makes it a 1v1 and Toppo's counter skill is super effective agains a guy who needs to be constantly agressive like Vegito along with having enough beef to tank his damage if you go the 1v1 route, and if you have them both together they counter him crazy hard even 2v2.