The Champions of Reason by Saejin Oh
From left: John Cleese, Penn Jillette, Bill Nye, Stephen Hawking, Frederick Nietzsche, George Carlin, Carl Sagan, Christopher Hitchens, Richard Dawkins, Charles Darwin, Neil DeGrasse Tyson, Adam Savage, Michio Kaku.
Overall, a solid collection of thinkers. I notice a couple "horseman" are missing--Harris and Dennett. Is there someone you would have added? Let me know in the comments.