Quote Originally Posted by Pokemaster Ash View Post

....although I'm trying to figure out why they apparently made it impossible to get normal Raichu outside of transferring one in (since it seems even transferring in a Pikachu from elsewhere will evolve into Alola Raichu because of the fact there's no Alola Pichu/Pika and it's the same evolution method). At least with the other Alola Forms, even though you have to transfer the originals in, there's nothing funky about evolving them and having them remain in original form.
You can't get regular Marowak or Exeggcutor either.