[CodeIsMyFetish]

Not OP, but I use an app called Obsidian for this. It's my favorite way to take notes and make connections between topics.

[psychomugs]

I also use Obsidian, and paired with a handwriting keyboard for Apple Pencil support (e.g. mazec; Apple's built-in scribble feature is too finnicky), it's been my Goldilocks note-taking method for the past few months.