Red’s Red and Blue team would probably just be some variation of his let’s go team. Piakchu, Venusaur and Pidgeot would be on there as he used them in promotional set work for the game (same artwork that always showed Blue/ Green with the Charmander line). Then I’d say you can add Lapras, Snorlax and either eevee or Charizard to round the team out.

I think red's team would have a Pidgeot since he had that in the Official Artwork

wow, I used a team identical to Calem's when I reset xy for the first time

Brendan's starter in sapphire, ruby and emerald is Swampert.

LGPE it’s not red nor leaf. It’s actually Chase and Elaine