UPDATE 5.29pm 27/02: In a blog post that followed the announcement of Pokémon Scarlet and Violet, we now know the name of our starter Pokémon: Sprigatito, Fuecoco, and Quaxly.
Grass type Sprigatito is described as a “capricious, attention-seeking Grass Cat Pokémon”, whilst Fire type Fuecoco is “the laid-back Fire Croc Pokémon that does things at its own pace.