I truly mean the best of the best:
Homer, Iliad and Odyssey
Chaucer, Canterbury Tales
Dante, Inferno
Cervantes, Don Quixote
Shakespeare (complete works)
Milton, Paradise Lost
Melville, Moby Dick
Tolstoy, War and Peace and Anna Karenina
Proust, In Search of Lost Time
Joyce, Ulysses
Runners up are Swift, Gulliver's Travels, Austen, Pride and Prejudice and Dickens, Bleak House.
These are the literary works I'd bring with me to a desert island.
Below that you have the greats who are splendid but not quite the best of the best: Stendhal, Flaubert, George Eliot, Dostoyevsky, Twain, Kafka, Woolf, Faulkner, Beckett, McCarthy etc.