They seem to be in a realm of their own. At least according to Sanjay Srivastava’s correlation they are.
As the father of two working professional philosophers I’m not at all surprised. They are in a class of their own: among the smartest and the hottest. Notice that those folks who study religion are the best looking, even better looking than philosophers. But when it comes to intelligence they are barely smarter than political scientists. Head over to The Hardest Science for the background story.