Final answer:
The AMO ratings in the Avionics field include the Radio and Auto-flight system categories, which cover communication/navigation and automated aircraft control systems, respectively.
Step-by-step explanation:
The categories included in AMO ratings in the Avionics field are Radio and Auto-flight systems. AMO, which stands for Aviation Maintenance Organization, is responsible for various maintenance tasks related to aircraft systems. The Radio category involves communication and navigation systems which help pilots to conduct flights safely. Auto-flight systems pertain to the automated control of the aircraft, including autopilots and flight directors that assist in the management of flights.