I'd love to have one notebook-type app that works between all my devices, or some combination that lets me have the same or similar content.

I loved OneNote back in Uni, though I reached a point where I stopped taking notes (through the fault of the powerpoint teaching method, and my own laziness), and OneNote does seem to be a bit bloat-y when it comes to sync.

Stuff like EMACS org-mode (or, preferrably, some kind of Visual Studio Code equivalent) seems enticing, but I'm not sure how I could hook that into my phone in a way that isn't a terminal emulator.

Anyone found anything (app, service, or custom setup) that works for them?