horror: It, Carrie(Basically most of Stephen King's books), and Bioshock
Sci-Fi: Star Wars saga, Mass Effect, and Star Trek
Fantasy: Lord of the Rings, Harry Potter, and Legend of Zelda:Twilight Princess
Romance: Romeo and Juliet, Outlander, and Dream man
Ancient Mythology: The Odyssey, The Iliad, and Story of Hercules
Mystery: The Godfather, The Complete Sherlock Holmes, and The Silence of the Lambs
nonfiction: The Holocaust, , Story of the Zodiac Killer, The Civil war
These are all good examples of superior storytelling and literarture for their genre, but like I said no one book can be called the best.