There is nothing special about RAW and as you may know it is very easy to adjust Exposure in ProRes Log files by adjusting Gain in linear gamma (ProRes source should be captured native camera ISO)
Seems it is also possible to adjust White Balance in Resolve in same way if source video was shoot with native WB setting (usually around 5500K)
There is a Temp/Tint controls for ProRes, but in gamma corrected setup it operates in very different from RAW WB and can't provide same quality with large WB adjustments.
After some tests i found that it is possible to match WB RAW by adjusting WB Temp/Tint tool in Primaries operated in XYZ color space and Linear gamma.
Temp/Tint tool in Primaries sliders are limited by temperature 4000 tilt 100, so in huge ACES or XYZ color space i need to add 2-3 node copies of same tool to adjust WB enough.
It would be great to extend to infinity min-max value limits in Temp/Tint tool in Primaries sliders
Sounds insane, but WB adjusted in larger color spaces like ACES or XYZ, final result looks even better than WB adjusted in RAW.