I think there's an argument for lawful neutral. In MoP his entire motivation is to prepare us for a Legion invasion, and the Legion are the literal embodiment of Chaos. He was willing to sacrifice anyone/anything to oppose Chaos. He wanted one faction to subsume the other in order for Azeroth to be prepared for the Legion's return - as opposed to them existing separately.
I'd say Neutral Good, Lawful Neutral, maybe even Lawful Evil would be the prime contenders.