Xbox 360 Controller Mapping
Driver version is 2.1.0.
Joystick (Microsoft Xbox Series S|X Controller) has 8 axes (X, Y, Z, Rx, Ry, Rz, Hat0X, Hat0Y)
and 11 buttons (BtnA, BtnB, BtnX, BtnY, BtnTL, BtnTR, BtnSelect, BtnStart, BtnMode, BtnThumbL, BtnThumbR).

Stadia Controller mapping
Driver version is 2.1.0.
Joystick (Google LLC Stadia Controller rev. A) has 8 axes (X, Y, Z, Rz, Gas, Brake, Hat0X, Hat0Y)
and 15 buttons (BtnA, BtnB, BtnX, BtnY, BtnTL, BtnTR, BtnSelect, BtnStart, BtnMode, BtnThumbL, BtnThumbR, (null), (null), (null), (null)).