I really wanted a dotted ruled lines for my notes as well but in the meantime i made made this little bodge, it might help yall.

just copy the page into your notebook and "set as default template"

https://onedrive.live.com/view.aspx?resid=BC5DA5DADA4DDB5E%2116653&id=documents&wd=target%28Back%20Burner.one%7C8AD31327-7093-482A-AE3D-8FA0DEB80AF7%2FSome%20Dots%20from%20Geoff%20B%7CF56256C4-448A-4A02-A4D4-A9B50DE365F7%2F%29

onenote:https://d.docs.live.net/bc5da5dada4ddb5e/Documents/2020%20Bullet/Back%20Burner.one#Some Dots from Geoff B§ion-id={8AD31327-7093-482A-AE3D-8FA0DEB80AF7}&page-id={F56256C4-448A-4A02-A4D4-A9B50DE365F7}&end