Yes, I should have pointed out that I am on a Mac. Canon comes with its own printing app called Print Studio Pro which takes the place of LR's print module. In Canon's app I can see all the paper profiles which is why this is probably a LR issue.
If the profiles don't show it is almost always a driver installation issue often caused by the driver no longer being fully compatible with the latest operating system update. Ignore the Canon app completely as what you see there has nothing to do with how Lightroom (or any non-Canon app) prints, you simply need the printer driver to be updated. Usually this is done by downloading the latest version from the Canon website and installing. You might need to recreate the printer connection in the system preferences Printers & Scanners section.