The way this was done was that white balance was made from another exposure using a color checker card. Same color temperature and tint was used for all shots. I just flipped between different color profiles after setting WB and exposure.
Regarding C1 I just included because I guessed it would be different. Used same exposure correction, color temperature and tint as on the others.
It would be smarter to include the CC in the exposure.
Thanks for your questions/suggestions.
Was the X-rite Passport ColorChecker profile version custom white balanced? Is it not using the same white balance settings as the Adobe Standard and Adobe DNG PE versions?