Please suggest some fun themed teams I could use for my Insane E4 runs

I'm starting a different save file for an True Insane Eevolution run and I need some thing to go back to if the run gets a bit too crazy lol

So far, I've done all Monotypes, 15 Mono Colors, Only Dogs, Only Cats, two Starter teams, and the recent shiny sprite teams I've posted.

Some ideas I've had are Only Turtles, Only Snakes (currently prepping) and Only Foods.