Which purple Pokémon are doing well competitive?

Currently I want to make a team with only purple Pokémon (either the normal or shiny Pokémon.) But, I can't seem to find a good site where you can use the color for a condition to build a team. Currently I've got four Pokémon and I want to add two more, but I just don't know which one. I'm hoping to get some suggestions where I can chose from.