The list is here (HT Tyler Cowen).
Nobody from William and Mary, American University, or the Urban Institute is on the list (although there are some people at each that I wouldn't have been surprised to see on it.
There are four from George Washington University: Howard Beales, Barry Chiswick, Douglas Frechtling, and Donald Parsons. I had Prof. Parsons for two semesters of labor economics. I haven't had contact with any of the others, but I met and saw Barry Chiswick speak at the recent Georgetown conference on high skilled immigration that I participated in.
Several George Mason University professors appear on the list.
As far as bloggers go, Taylor and Mankiw are the ones everyone is already aware of. I was personally a little surprised to see Mario Rizzo on the list as well.