__________________ Among the tales of sorrow and of ruin that come down to us from the darkness of those days there are yet some in which amid weeping there is joy and under the shadow of death light that endures.
J.R.R. Tolkien, "Of Beren and Luthien" from the Silmarilion
This list, as well as the debate itself, could go on forever. So I"ll limit it to who I have seen in the last 10 years of JL.
The list in no certain order, involves the Powerhouses who have been on the team. That means I don't choose Batman or Green Arrow. Both are formidable in his respective way, but neither wields power.
Firestorm, Green Lantern, Wonder Woman, Jonn Jonzz, Capt. Atom. Capt Marvel, Zatanna, Dr. Fate, Superman, Orion,
Superman: He blends his powers in an offensive way better than those on his level.
Captain Marvel: IF he's written as he should be, Only Superman could edge him in a bench pressing contest. The difference is Superman is a bit stronger, Cap can take Superman's punch better, due to magic.
Martain Manhunter: He has more power but does not use it to it's fullest. ALso, he has weaknesses that off-set his power.
Green Lantern: Only his mind limits his potential. IOW, I don't believe EVERY GL can perform "Superman level" feats because he would have to be able to imagine doing it. Hal could come close. Alan, John, Kyle and Guy. In that order.
Wonder Woman: She would beat most of the GLs. Only Hal, and maybe John and ALan would beat her.