(i,e, iPad + apple pencil + Goodnote5 /// old fashion notebook + pen, etc)
MS Surface Pro 7 + some drawing board app
RocketBook
Windows notepad π
Sublime text 3 π
Funny enough I know many people who love sublime text for this.
GoodNotes.
Paper and Pen
Gdoc
Notepad tbh
Ipad + notability, atom
My memory Just joking. I like OneNote.