(I like reading long reviews)
Quillpad was recommended by users before. I think it’s solid, nowadays a better default app on a few dimensions. It hasn’t got a powerful versioning system though.
Here’s a good integration task:
- https://github.com/quillpad/quillpad/issues/181
- /e/ has a fork of the mentioned nextcloud sso library and uses it in Notes to provide the Auth
Working upstream on Quillpad to use the official library would ease effort required to use it as shipped default app (a switch that I think is unlikely to happen but more likely with that work already done).