Originally posted by Old Man Whirly!
They don't really have counterparts, I see no similarities besides Genius and money between Tony and Bruce. Bruce hides behind a false identity, Tony is Iron Man. Bruce isn't a party guy, Tony is off the chain. Same with all the others, even Darkseid and Thanos are not really analogues.
This imo
Tony Stark - John Henry Irons/ Steel is the closest match in ability not personality.
Dr Doom - Ultra Humanite is a closer match than Luthor etc. He has a super intellect but instead of building arnor has enhanced himslef. He augmented his brain to have TP/TK, genetically altered a body to put it in to become class 100 and has played with magic (aquiring hammer of Thor, Powerstone, attempted to get Helm of Nabu, taken the power of a 5th dimensional imp)
Moon Knight - Batman is probably the closest but not perfect
Hulk - Solomon Grundy though instead of getting stronger whennhe gets mad, gets stronger when he absorbs energy (magical energy works best for him)
Thanos - Darksied is closest though they dont have anywhere nesr the same motivations