Don't forget the development and kiosk gamepads.
From
Luckless Heaven:
DRC-DK-MP:
The "standard" development gamepad. Supports both wired and wireless connectivity.
DRC-DK-TV:
An extended version of the development gamepad that has HDMI output. Requires a Wii U console AC adapter and only has wired connectivity.
WUT-012:
An unknown development gamepad that's only been referenced in Anatel (Brazilian FCC equivalent) documentation.
...and also kiosk gamepads:
WIS-003:
Looks similar to a retail gamepad, except it has a thicc cable for power and wired signalling, and the Power button is non-functional.
There's also the various prototype gamepads, but I don't have a full listing of those at the moment.