I'm definitely familiar with Knytt, Knytt Stories, Seiklus, and Small Worlds.
Knytt is definitely a big inspiration. I guess I could describe my thought as taking Knytt and giving it more of a story, rather than simply exploring the beauty of colors and sounds and moods in different platformer spaces.
Knytt Stories gets away from this - there's more story, but the gameplay diverges from it even more. Seiklus lacks the kinesthetic joy and expressiveness of Knytt, and does not try to tell a story. Small Worlds is closer, but again, it does not try to do too much.
And hopefully, there could be a way to make it more accessible than Knytt, even, for people like Michaël.