Best Fighter

[Halbarad]

I would like to add someone to the initial list and that is Prince Imrahil, a personal favourite of mine. If I may quote from Battle of the Pelennor Fields:

"Aragorn and Eomer and Imrahil rode back towards the Gate of the City,
and they were now weary beyond joy or sorrow. These three were unscathed
, for such was their fortune and the skill and might of their arms, and few
indeed had dared to abide them or look on their faces in the hour of their
wrath."

These three get my vote.

As for all mortals, Hurin is my pick:

"So ended the mightest of the warriors of mortal men"
-Of the Ruin of Doriath.