how do I print a list in Reminders?

Yes, that does seem a bit of an oversight.

You can export the reminders to an .ICS file that Apple calendar can open, but those reminders that aren't dates won't show up on the calendar, and will be To Do remarks. Apple's Calendar offers print functions.

That's though the way it has seemingly been designed. You can always use screen capture to capture the reminders that are on screen, and print the Preview image created on your desktop.