Ticktick and Onedrive(Markdown files) here.
I also love markdown for notes.
Finished notes I export to PDF or word so Onedrive handles them better.
Onenote I use from time to time for quick notes or meeting notes.
I also use different apps at times but my rule is to always export finished notes and save them in onedrive. Notes in draft are written in the app of the moment :)
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