I personally don't like Hemingway and have never been able to read his books. That's just my personal taste.

I think that George Orwell was a master of English prose style. It's just perfect. Superb.

It is hard for me, as a native English speaker, to know how writing would seem to a non-native speaker. I enjoy Lee Child's "Jack Reacher" thrillers, and it seems to me that he has a very crisp, clear style of writing.