Thanks for your profiles. I have also rolled my own. (Interestingly the profiles are about 1Mb in size, compared with 3kb from Xrite and 54kb from Adobe DNG Profile Editor.)
I used a Colourchecker Passport shot, created the TIFF in DCRAW and straightened / cropped it in Photoshop.
When using scanin with ColorCheckerPassort.cht, the chart was not detected correctly and I had to use ColorChecket.cht.
I did not do any linearization.
The resulting neutral and subtle profiles are virtually identical and very unsaturated in Lightroom. The profiles that you provided are better: the difference from Adobe Standard is mainly in the blues. My own profiles seem to have a different colour balance and are duller.
Where the Adobe Standard wins, is that it handles some blown specular highlights better. They are bright blue in the profiles created by dcamprof.
Further experimentation required ...