Ursual K. Le Guin, Bram Stoker, David Foster Wallace, Dan Brown, Robert Louis Stephenson, Kurt Vonnegut. I picked some fragments of stories that I've started over the years, that were all vastly different, and got different answers. The one poem verse brought up Stephenson, which is kind of understandable, I studied him a lot in college and my poetry tends to be along similar lines. Vonnegut came from a research paper I did years ago, and I don't really see it.
It's all bullshit. I think it looks for words that it has flagged as unusual, and if it doesn't find any, it defaults to Wallace. You would never mistake what I write for any of those authors.