Is there a format that only allows level up moves?

Question

I thought of this as a format, and I'm wondering if it already exists or not.

Comments

There's probably some obscure Showdown format/other meta exactly titled "Level Up Moves Only."

Answer 1

No, there is no such competitive format on Pokemon Showdown!.
I checked Smogon forums's Other Metagame index and there is no such format listed.
Source: https://www.smogon.com/forums/threads/other-metagames-index-ask-questions-here.3709852/

Comments

I stand corrected.