69th Exalted Faction is Arakkoa Outcasts
After the initial questing in Spires of Arak, the remainder of the Arakkoa Outcasts reputation was earned my garrison. On McTacky and my alts I did the The Bloodmane Scrolls garrison mission for Relic of Rukhmar (which give 2500 rep each). At last I hit exalted.
Not a thrilling story, but I am still grinding out the other WoD reputations.