I'm on the same boat, burnt by Evernote and trying to find the good alternative. Sticking with Obsidian for now with some apple notes in-between. But the former has too many features I don't need and later has this vendor lock-in.

If I ever built a note taking app, I'll be using your tag line as a subtitle and a guiding principle :)

"...just a list of notes with some formatting and sync capabilities"