As I did with Batman, here are some Supermen based on Phil Bourassa's design for Young Justice ! His Superman is obviously the third on the left.
From left to Right :
Blue & Red Superman, Young Justice S, Kingdom Come S, Justice League Beyond S, two version of Superman Red Son, New Frontier S, Justice Lord S, Trinity Superman, Black Lantern S, Unknown Superman & Zibarro (from All Star Superman) aaaand Clark Kent !
Then Dictator Superman, Nazi Superman (who is less nazi-ish than Dictator S ^^), Man Of Steel Movie suit and DCnU Superman.