The Shar Pei is a bit of a funny one, because while the FCI classifies it as a mastiff, it is simultaneously listed as a Spitz-type dog by Wikipedia (having some admixture with the Taimyr wolf, like the Siberian Husky) and shares the general body plan despite its wrinkly and heavy-set appearance.
Also, the domestic_dog page still needs a bit of a cleanup. I have done some grouping together for the Spitz-types (though placed Shar Pei under Mastiff for now) but even that may need some more work.
Updated