I've read all of those except for On the Beach. I probably wouldn't reread Grapes of Wrath but not because of any dislike--in fact the opposite for both book and film. I'd reread any of the others though I would probably be more inclined to rewatch the 1937 Lost Horizon film. It's a marvelous story but there's nothing particularly exceptional about Hilton's prose as I recall from reading a few of his books decades ago.