"What Pokémon are you?" quizzes can be found on a variety of websites including AllTheTests.com, quibblo and PlayBuzz. Though, some further searches may be needed depending on what Pokémon you are looking to have included.
Some sites include only classic Pokémon. So those looking for the most up-to-date quizzes, with current Pokémon, may have to do more searching to find exactly what is desired, as Pokémon has been constantly expanding for years. Be sure to include specifics regarding the type of Pokémon quiz you are looking for, to access the most ideal quiz possible.