Catchable Pokemon Prior to a Game's Gym 1 [Pointless]

We’re looking for the name of any Pokemon that can be encountered and caught in the wild before the first gym battle in any main series game. So no trades, no hatchable eggs, no Max Raids, no gift Pokemon, just Pokemon you can find in the wild. Also, we aren’t counting the Let’s Go games as main series, and we aren’t counting Alola games due to the absence of gyms.