AirPrint

I understand.

These days I would absolutely rule out anything that is not AirPrint-capable though. Apple has effectively abandoned support for anything else. There is no reason printer manufacturers could not implement a draft option in their AirPrint-capable printers. I just don't happen to know of any that do. It doesn't mean they don't exist.

If it's that important for you, why not contact the major printer manufacturers and ask. If they don't respond, are not interested, don't know what you're talking about, or otherwise aren't interested in your business just move on to another manufacturer.

Since Apple left the business printer manufacturers have successfully competed with one another in a race to the bottom, so the all popular choices amount to junk and more junk.

For what it's worth I have had good success with Brother's line of printers and MFDs, but I don't happen to know of any that have a draft printing option.

Drivers are not required for AirPrint.

AirPrint capability is incorporated in the printer: https://developer.apple.com/airprint/

Reported this to Apple after contacting Canon. Apple agreed it is an issue and will address it.