For people who want to make their own: a lot of these are very easy to create in LaTeX. I made a bunch of templates a few years ago (https://michaelgoerz.net/no

For people who want to make their own: a lot of these are very easy to create in LaTeX. I made a bunch of templates a few years ago (https://michaelgoerz.net/notes/printable-paper-with-latex-and-tikz.html https://michaelgoerz.net/notes/printable-paper-with-latex-an...) that I still regularly use in GoodNotes on the iPad.