Consensus seems to be V.S. Naipaul, the Caribbean writer of Indian Origin. If you have reservations, the next in the list too is an Indian, winner of both the Booker of the Bookers and the Best of the Booker prizes, Salman Rushdie
Salman Rushdie is my number one. He seems to embody the original use of the word genius. It's as though something other-wordly takes control of his pen. It's amazing that anyone can write like that. I've never been so enthralled by a book.
And unlike so many writers, when you learn more about him he doesn't become obnoxious and unlikeable. He's fantastic. However, I haven't read anything by Naipaul.