[Formendacil]

Glorfindel has them all beat flat.

Except for Gandalf and the Witchking. Quite frankly, like Aragorn, I would put those two off the list, simply because one's a Maia and the other's a Sauron-enhanced, no-man-can-kill-him, fighting machine...

Of course, judging by the fact that you put Madril on the list, this is movie-based, not book-based. I have no comment there. Comparing one movie fighter to another is too difficult for my untrained eyes.

Or...

wait!

The King of the Dead. Unstoppable.