This page is a list of controllers and if they are compatible with Encore, if a controller is missing, assume it hasn't been tested yet or doesn't work.

Full Compatibility

All controllers that have been tested and are compatible with Encore natively currently:
Keyboard & Mouse
Most Gamepads CRKD Neo S

Partial Compatibility

Controllers that require third-party tools / third-party tools.
Plastic Guitars (Steam Input, possibly missing features)