“Someone like Rahm Emanuel would be a pretty divisive pick,” Rep. Alexandria Ocasio-Cortez, D-N.Y., recently said about the former Chicago mayor possibly joining President-elect Joe Biden’s Cabinet. “And it would signal, I think, a hostile approach to the grassroots and the progressive wing of the party.”Rahm Emanuel … divisive.As we think back on Emanuel’s two terms as Chicago’s mayor, from May 2011 to May 2019, it’s notable how many colorful descriptions fit his outlook, temperament and skill set: Demanding, aggressive, politically shrewd, business-savvy, enterprising, tightly wound, aloof, …