RAW signal 100% mapped into HLG gamma 

yes, I am testing a way to map all the data from raw or cineon into HLG, as you know by default if used a CST node, HLG is never used at max potential gains level
So here there isn't any classic tonemapping, is a setup for a base HLG look to get you started from max gains.
This method will be added to MotionCam Grade Lut Pack