I'm a Notion user, but I'm migrating all my stuff into AnyType (I was an alpha user).

But the software is still really beta and I miss a lot of features on the mobile app (like copy-pasting something is a crime many times because the app selects a block on a long press). So expect some friction when you start using it. Nevertheless, the community is pretty strong and the team behind AnyType is really transparent. For me it works better than Obsidian because I'm also a UX-minded guy =)

Make sure to checkout their repo: https://github.com/anyproto