Proton's owner also gives me the ick with his Trump and the Republican Party praising. I'll look into it further and see if there are any other good options.
[Edit] I learned that CIRA (Canadian domain name registrar) has DNS over HTTPS support so I'll be reverting to them. Canadian shield does sound pretty good for a non-profit service without tracking: https://www.cira.ca/en/canadian-shield/