You said 2020, which doesn't hold any relevancy beyond covid at this point. Is why I found it odd what you were saying. I just don't see what the relevance is for distinguishing whether a game "began life" from scratch on a brand new system, vs eventually morphing into a game that gets moved to a new system behind the scenes. Some of Nintendo's biggest/ best games dating back decades ago began life on systems before eventually moving to a new one. It just doesn't seem like a distinguishment that has any relevance or meaning. Super Mario World was originally Mario 4, and was heavily changed/upgraded behind the scenes, then re-premiered as a SNES launch game.
There's no telling what kind of games Mario Kart World or DK Bananza would've been had they pushed through and remained as Switch 1 games. They would've been vastly different, and/or possibly canceled if they couldn't make the game's vision work within the limited confines of Switch 1. But who knows, though? Those games don't exist in that form.
That's fair. The more I think about this too, this is a huge year for Kirby, so I'm surprised they're not just doing like a big Kirby Direct. There was also the rumor back in the spring from Nate where he said Kirby Robobot was being ported to Switch 1 this year, as well. There's Forgotten World Switch 2 with DLC, Air Rider, and potentially Planet Robobot. Dang that's a lot of Kirby!