That's fine but given that WB is not applied to the raw data in camera but when the raw data is rendered into a jpeg image either in camera or in post proves that all camera histograms are not a raw histogram.
You stupidly claimed your Sony's camera histogram is a raw histogram đ
Your camera's histogram will vary according to the WB setting and your selected colour space and so cannot possibly be a raw histogram đđ
If you ask the engineers at Sony I can guarantee you 100% they will tell you the camera's histogram is not a raw histogram đ¤Łđ