But that is a very subjective request, by the end of Oathbringer, mr T did what he could to “save humanity” and in his mind on Roshar, humanity would not be extinct. But unless you count his founding of the the diagram there isn’t much uniting going on. He was content to sew chaos by assassinating the worlds leaders, and let dalinar do all the work uniting people - planning to swoop in and take control. I don’t see him as a Uniter is all.