DK, I agree with your remarks concerning the above list. Some of those guys were in decent shape at one time or another.
DK, I've encouraged a couple of notable GetBiggers to get a Hollywood agent. I usually offer this recommendation when I hear that another Super Hero movie is being considered by one of the major studios. (Or roles that require a 'bodybuilder look'.)
I don't know how many GetBiggers have followed through but if you have a good look and a decent build, you should look into that Hollywood agent possibility.
Getting a good agent is difficult but not impossible and there are suggested procedures to follow. It's a shot in the dark but definitely worth the effort if any agency is remotely interested.
If you want specific info about this subject, email me via this board. Acting experience is good but not always necessary.
After many years of working constantly with an occasional two-week break between films, one of my family members was recently signed on by a big time Hollywood agent and will most likely never see a two week hiatus again. At present he's in New Zealand south of that recent earthquake zone working on two major film projects.
Once you get into that business and get known as a hard and dependable worker, the job offers start rolling in because most film crews go from film to film and like to remain together from project to project (sometimes but not always - so a good agent is always of great value).
I suggest you look into finding an agent providing you think you look like what you think a superhero should be .... or something like that.
Good luck, DK.