Literary reputation

A literary reputation is such a fragile thing. I was perusing an MFA reading list and what jumped out at me was the absence of Graham Greene. Here is someone robbed of the Nobel in the opinion of myself and many others, a writer who has written such major works as THE POWER AND THE GLORY, THE END OF THE AFFAIR, THE QUIET AMERICAN, THE HUMAN FACTOR, and so many more, a rare novelist who could write "entertainments" (Orient Express, This Gun For Hire) as well as literary novels of the highest caliber. Clearly a major writer. Perhaps too dark for some tastes, however.

How many Nobels are awarded posthumously? On more than one occasion, the rumor mill had Greene getting it -- but he seemed to be the perpetual runner-up. What writer writing in English who has the Nobel deserves it more than Graham Greene?