What kind of printers do the most secure companies use?

If wifi-enabled printers are a bad idea, I’m wondering what kind of printers (brand even perhaps) that secure companies use, such as banks or financial institutions. I would assume these printers don’t even have the capability of wifi, that is they are ethernet-only. But searching around I haven’t really found anything to start on ethernet-only printers with all the standard security features of secure printers (password protection, encryption, lack of hard drives, etc.).