Finding a 4-in-1 printer compatible with Mac mini running macOS 15.3

There are too many to list, please do your due diligence. First determine in detail what your AIO needs are (color or black and white, amount of pages printed per month, need a document feeder yes or no, etc....) then research to see which available devices fit your needs including the version of Mac OS installed.

Whatever printer you get, it is good to check that it is AirPrint-compatible.

AirPrint builds a certain amount of driver support into the printer itself, so that macOS can use the printer without you installing a separate driver from the printer manufacturer.

Please see: About AirPrint - Apple Support