Finnish artist Jaakko Seppälä demonstrates remarkable skill and versatility with this chart. You can see a much larger version here.
Jesus Diaz of Gizmodo helpfully lists the components. From top to bottom are the characters of Asterix, Calvin, Donald Duck, Captain Haddock, Batman, Heimo Vesa, Corto Maltese, Moomintroll, Garfield, and Lucy. From left to right, you see the styles of Albert Uderzo, Bill Watterson, Walt Disney, Hergé, Neal Adams, Perrti Jarla, Hugo Pratt, Lars Jansson, Jim Davis, and Charles Schulz.