More than 1 Camera Color Profile per camera needed?

Is it necessary to create multiple camera color profiles for a given camera?  I've read some articles online that advise creating a profile for each white balance setting for a camera.  I therefore created camera color profiles using my ColorChecker Passport card and the X-Rite profile converter.  All worked well and profiles went right into ON1.  By the way, I shoot in RAW.

I made a profile for Sun, Shade, Incandescent, Flash white balance settings for my camera (Olympus mirrorless).  I then created 4 versions of a single photo taken with that camera and applied the 4 profiles to each version.  What I found was that I saw virtually no difference in the color histograms among those 4 versions.  So I decided to just use one of the profiles and give it the generic camera name instead of specifying the underlying WB with which the file was created.

This seems to make sense especially if I'm shooting RAW.  If the color is right, shouldn't it be right irrespective of the starting point if that point was from an 18% gray neutralized and color balanced file? 

I'm interested in thoughts on this issue.

Steve