I think graph/network based notes are really interesting and I'm keen to see how Athens develops.

I've created my own open source approach called Very Nested [1] that uses GitHub repos for storage. It also supports files and images.

So far, I've enjoyed organising my recipes [2] with it.

Feedback welcome, it's new.

[1] https://verynested.cadell.dev/

[2] https://cooking.cadell.dev/