Not that they are necessarily Aspies, but I think I know some of the reasoning behind the list and some names I might disagree or agree with...
1. Edgar Allan Poe -- MAYBE. His poems have characters who are overly obsessed with something, usually murder. The Cask of Amontillado, The Telltale Heart, and The Rave are examples of this.
2. Truman Capote -- NOT LIKELY. He was tested with an IQ of 220 and has an unusual high-pitched voice and an unusual demeanor. However, he was able to converse well his many subjects for In Cold Blood, and this leads me to believe he had excellent social skills.
3. J.D. Salinger -- I don't know much about him, other than that he wrote the Catcher and the Rye.
4. Lewis Carroll -- MAYBE. he was at mathematician (a stereotypical Aspie trait), good at coming up with word puns in his poems, his stories indicate an off-the-wall perspective
5. Patrica Highsmith -- I don't know anything about her
6. Emily Dickinson -- MAYBE. she was a socially anxious recluse
7. George Orwell -- NOT SURE EITHER WAY. He was an ambulance driver in the Spanish Civil War. His 1984 seemed to have a lot of dialog and figures of speech. Newspeak, the language he invented, shows some creativity, but on the other hand indicates perhaps some obsessiveness necessary for its invention. I don't think it can go either way for Orwell.
8. Herman Melville -- NOT LIKELY. Melville lived an adventuresome life from what I remember from the Wikipedia article on him. He traveled around the world, basically, as a commercial sailor. Moby Dick is based in part on these experiences. I don't think there was anything particularly Aspie-ish that I remember about him.
9. H.P. Lovecraft -- MAYBE. His macabre horror stories were written in an archaic style. He had no formal schooling but wrote voluminously and it was pretty complex and well-received work, though particularly recognized for its oddness. He supposedly held som anti-Semitic views, but he was married to a Jewish woman.
10. Vladimir Nabokov -- I don't know anything about him