Clefairy. Clefairy has a lot of aspects most folks overlook. For instance, Clefairy was once the star of the cut Pokémon game, Pokémon Pink, which would have gone hand in hand with Yellow. This is actually referenced in the Let's Go games, where it's strongly implied that Clefairy is the third to Eevee and Pikachu. Secondly, Clefairy was actually the original intended to be the mascot of the game, and often is subtly referenced, like with the Pokédolls. If Clefairy is to have a regional variant, I'd recommend fairy and fire, like a little fire sprite. Same for Clefable, but Cleffa as pure fire. Like a little spark.
There weren't many submissions, so I'd recommend extending the time. Otherwise, I completely understand ignoring this.