In DPP it's possible to open the app folder and find various ICC camera profiles (a lot of 'em) but which is which I haven't a clue.
If there just would be a way to convert ICC profiles to DNG profiles (?),
then it could perhaps be possible to identify the right DPP ICC profile for the camera by deleting them successively from the DPP folder (test-wise),
and finally, in order to feed it - i.e. the rigth one converted to a DNG profile - into ACR/LR for comparison with the generic DNG profiles for the camera.