I kind of like the idea of Tony Stark (Iron Man) as some backwoods hillbilly. (We`d see the only superhero with a still attached to the suit.)

Probably white men for The Flash and Superman leaves open the faint possibility that it could be a Native American Flash and/ or Superman. How about a rabbi for Batman, if Batman turns out to not be a black guy. Trying hard to imagine The Thing as a Southerner or The Hulk as a stereotypical WASP, but it isn't working too well. Hulk:" I shall indeed smash some heretofore unknown object once I have determined what needs to be smashed after my constitutional and a few chapters of The Age of Innocence-.Bully!"