Not sure if you still need it but:
Left Stick:
Horizontal=X axis, Vertical=Y axis
Right Stick:
Horizontal=Rz axis, Vertical=Z axis
Hat:
Standard POV values (ie; not axes or buttons)
Buttons:
As in your diagram.
Left Trigger:
Button 10 (for drivers reporting 4 axis) or Rx axis (for drivers reporting 6 axis)
Right Trigger:
Button 11 or Ry axis
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