How do I know? Science: I used a "statistical analysis tool, which analyzes ... word choice and writing style and compares them to those of the famous writers." In other words, the internet told me.
And for me? Depends what text I put in. Sometimes James Joyce, it seems; sometimes Shakespeare; but - never Homer. Never Homer.
I found an excerpt from How Life Imitates Chess by Kasparov: written in the style of George Orwell, apparently. But who writes in Rowson's special style? What about Ray Keene?
More questions than answers: more copying and pasting than one blogger alone can perform . . .