Anderson Cooper
I watched The Late Show for the first time in awhile, and I thought overall the broadcast is much smoother. They have sort of taken away a lot of the things that made him unique, and tried to throw him into that mainstream Jimmy Fallon box to improve the ratings, but I guess they feel that's what is needed right now.
One thing that stood out is Anderson Cooper's impressive ability to come off as unbiased. CLEARLY, he wants Hillary Clinton to win, but he had a good enough poker face to talk about how he respects surrogates from both sides, that even had Colbert fooled.