I always felt the term noble savage could easily go to the Hellsguard Roegadyn. While they do have their lore intertwined with that of the Warrior job i hope they may also have a connection to Dark Knight as their character creation bio seems to support what i believe the jobs origin could be.

Lohengarde/ Hellsguard
The Lohengarde are a clan of Roegadyn with body and mind tempered by the unforgiving heat of the volcanic regions they inhabit. Believing the mountains of flame to be gates to the underworld, their line has for centuries stood vigil over them to prevent the passage of souls back to the realm of the living. Their sheer girth and steely demeanor open to the Hellsguard a wide range of paths, from the martial to the monastic.
As they hail from the volcanoes of Abalathia's Spine, they have no real city to call their own (and many Lohengarde seem to like it that way). If they are to be found in number in any city-state, it is in Ul'dah, where there is no shortage of the sort of sell-sword work that many wandering Lohengarde engage in - and no shortage of coin with which to pay them.