>>77047367Moore, Gaiman, and Morrison all explicitly read literature, at the very least the Romantics, since they all have that in common in their works. Peter Milligan is really well read, as seen by Shade/Greek Street/his Tank Girl book/The New Romancer/etc. Ellis I think is probably very well versed in science fiction, and Ales Kot's a pretentious blowhard but he's at least bothered to read stuff like Virginia Woolf.
On a curious note, Scott Snyder started as a prose writer, and his short story collection he wrote before moving into comics is pretty great. He was published in some very good journals, so he's not a fluke either.
On another curious note, Matt Fraction originally went to film school to be a director, and he talks a lot about film in the Casanova extras and in general. Really deep cuts too, not like the standard film school "Tarantino is god" shit.
But yeah, there's a lot of comics writers who very much read mostly comics and only read comics. Geoff Johns is probably the most nakedly obvious example.