Yes, I would have to agree that
Fingolfin is clearly the mightiest
Elf in terms of hand to hand combat.
(I also have great admiration for any
Elves that risked death, for a good cause because for an Elf the price of being slain is greater than for a man to die in battle - since all
men die eventually.)
Outside of military and hand to hand combat, I would say the greatest Elf was
Galadriel. She was one of the eldest and wisest (being born in the Bliss of
Valinor and being taught by
Melian the
Maia in Wisdom). She revolted with the rest of the
Noldor then during her exile performed great deeds, resisted the temptation of
the ring and constantly did good deeds by fighting
Sauron and helping the Ring Fellowship, thus redeeming herself.
Most of all she was able to keep herself alive all those
ages and returned as a hero to Valinor at the end of
the Third Age. She was a great success story all round.