In general, Notion has the same feel to me that Slack did when it first came out: Just the right balance of cutesy, thoughtful detail in the UX, but in a way that doesn't feel superfluous because the underlying abstractions are also very well considered.
Choosing the emoji icons for pages, being able to /page to make a new linked page inline, @referencing pages, the interchangeable table and calendar views... none of it is particularly novel, but they're the best I've ever used at making it feel effortless to compose.
Joplin looks good. I am going to give it a shot.
The lack of tags support on mobile and the proprietary storage format is what drove me away from OneNote.
Also the offline support isn't great which is a dealbreaker in the subway where internet goes in and out.
I'm always back to Evernote within a week.
Notion and Joplin were my most recent attempts.