Give a short name / nick name to a printer in iOS?
Get the respective printer's IP address. Printer touchscreen menu:
Settings > General Settings > Network Settings > Network Status > Wired LAN/Wi-Fi Status
Enter the IP address of the printer into a web browser (override security warning if needed).
The web-based printer config UI appears.
Click the ‘Basic Settings’ link (lower left, see screenshot below).


In the Basic Settings UI, click ‘AirPrint Setup’.


In the AirPrint Setup screen, change the Bonjour Service Name to your liking. You can also set location information.


Confirm changes by clicking the ‘OK’ button.


The info entered will appear in the AirPrint printer selection on iOS, even with location info if set.



Repeat with every respective printer.