I am loving the one for historian Anthony Beevor: John Keegan, Thor Heyerdahl, Karl von Klausowicz, Daniel Mannix... Terry Pratchett, Neil Peart.
Ahhhh, Pterry, you have infiltrated the military history (and reed raft sailing crackpot) markets. We are so proud of you!
Chasing down Neil Peart, by the way, gives one a range from Dave Barry, Hunter S. Thompson, and Iain Banks (clustered?!) to Aleister Crowley, Kurt Vonnegut, Spider Robinson, Ayn Rand, J.R.R. Tolkein, Isaac Asimov, and... Dan Brown. Which last is off in the lower right hand corner by himself, in apparent exile.
This is such a good toy.
/me goes to look up all her friends!
(ETA: Paul di Filippo has a corona, much like an exploded star. Ursula K. LeGuin gets close marks from Norman Spinrad and D.H. Lawrence readers, and is apparently occasionally read by readers of Ursula K. Le Guin. This is so much fun!!!)