Not sure George beats Lennox or Riddick Bowe. Both guys were very big men who were faster and more mobile than a prime Foreman. George may have had the strength and power advantage over both, but they were much better boxers and had more options in the ring.

In my opinion, Larry Holmes and Evander Holyfield beat any version of Foreman. Holmes, in my opinion, is a very underrated boxer whose jab, chin, stamina, and movement would've made him EXTREMELY difficult for Foreman (or any heavyweight, including Ali) to beat during his prime. Evander would just be a bad style match up, able to utilize his stamina, chin, and underrated defense to survive 6-7 brutal rounds before stopping an exhausted Foreman. You have to remember that a young Foreman was not clever at all, and knew nothing about pace.