Here are the classes, structs, unions and interfaces with brief descriptions:

Nphyduino	Phyduino Pico board library for MicroPython
CLed	Gives control of the built-in LED (D8) on GPIO5
CMAX11635	Driver for the on-board MAX11635 12-bit ADC (U5)
CSTUSB4500	Driver for the on-board STUSB4500 USB-PD sink controller (U6)