Don Lemon, John Oliver, Colbert, Jon Stewart
Found these lists:
https://www.quora.com/Who-are-the-prominent-left-wing-commentators-that-attract-controversy-in-the-USA
Overman, Maher, Maddow,Krugman, Chris Matthews
Also: from a Speaker Bureau website:
http://www.eaglestalent.com/speakers/politics-amp-current-affairs/commentators-pundits/
Also: from a Speaker Bureau website:
http://www.washingtonspeakers.com/topics/political-pairings.cfm?showall=y
FWIW from 2007 - contact info to media personnel (historical document)
https://www.labnol.org/internet/email/email-address-of-journalists-news-editors-tv-anchors-web-reporters/1352/
NBC:
https://en.wikipedia.org/wiki/List_of_NBC_personalities
ABC:
http://www.gogomag.com/talkingheads/misc_abc_f.php
and
https://www.pinterest.com/abcnews/abc-news-anchors/
CNN:
https://www.cnn.com/specials/tv/anchors-and-reporters
CBS:
https://www.cbsnews.com/team/
WOW. Thanks.