https://www.kennedy-center.org/whats-on/marktwain/

"some of the biggest names in comedy" which apparently turned out to be:

Louis C.K., Whitney Cummings, Woody Harrelson, Arianna Huffington, Jay Leno, John Mellencamp, Stephen A. Smith

So two comics, three if you count Leno before he became a court fluffer and assorted others. Pretty dismal; I expect a lot of people would pass when they heard Maher was getting the gong.