I use the default Notes app from Apple
I still haven't done my research when it comes to the named clipboards, so I don't know how they work.
I found this other macro that can be, at least, a little help in case my request for the Notes app isn't possible at all:
With some modifications, it can be better than opening the Notes app and all that. The only thing is that I then have to copy the notes manually, but at least I can do that when the time comes, instead of doing it when I'm having the idea for the note