I really don't see the next console coming out that early, but at least you're not predicting 2022 like some.
Anyways I'll give it a shot:
2020: Bayonetta 3, and a Mario RPG
2021: BotW Sequel, Pikmin 4, 2D Metroid, 3D Mario, Diamond and Pearl remakes (Heavy year because games planned for this year are delayed)
2022: A Mario Party, 2D Zelda, Metroid Prime 4, Pokémon Gen 9
2023: Astral Chain 2, Xenoblade Chronicles 3, 2D Mario, some unexpected Donkey Kong game that isn't DKC
2024: Another Mario RPG and a Yoshi game
Also there's like 3 Kirby games and a Fire Emblem somewhere in there.
Then the next console comes out in mid to late 2024 (I expect the big launch title to be MK9, which I doubt they'll make crossgen like they sometimes have)
- Switch - 27m
- PS5 - 15.5m
- Xbox Series - 10m