To me, Tubman is clearly American as a former slave and abolitionist, and Xerxes is clearly Persian as an ancient enemy of the Greeks. I don't know if getting a History degree has me particularly prickly, but hearing "Napoleon of the Huns" or "Abraham Lincoln of Arabia" makes me sick. It feels like a symptom of youngsters struggling to learn to read. If the devs really wanted to legitimize their mixing and mashing of nations, they would have chosen only leaders with plausible connections to other nations like the Marquis of Lafayette (US, France) or William of Orange (Netherlands and England), although they may be part of such a small club of multi-national leadership figures that such a legitimizing set-up was impossible.