I think that you're just asking for printers that are strictly offline -- and by "offline," I mean: They don't connect to any mothership, ever, nor do they have any facility by which to do so.

There's a ton of printers that are strictly offline. Some are older and some are newer, but there's a ton of them either way. That "offline" part is simple to accomplish.

Can you talk more about what else are you looking to achieve so the field can be pared down a bit?