The rules as to "who qualifies as a fighter" aren't really specified. I would have been inclined to rule out anyone who uses magic - which as pointed out would throw out all those elves the OP included in the top tier. I would stat Glorfindel as a cleric for a start. Fingolfin could be a battlesmith artificer.I'm not going to cry foul TOO hard; as noted, the elves we've got at the top of the food chain all have magic powers too, but I will quibble here. Elric is primarily a sorcerer, much as he uses that sword. As we know, he's deliberately designed to be the polar opposite of Conan. Putting him on a list of the greatest fighter-types in fiction seems off.
I would also have ruled out legendary characters like Robin Hood. There are way to many potentials, such as Gilgamesh.