So, I am a hobbyist. I want to dabble in seeing if I can mock up an industrial/robotics 4900HS/X570 single board computer. Literally power distribution, CPU socket, RAM slots, and mini PCIe slots shooting for a fanless small form factor that nerds like me want.
I'd be tickled pink for access to a X570 reference board design in any format that I could just delete features from and trivial rewire for mini-PCIe/M.2 .
I have found diagrams and information of questionable quality for the CPU, but not so much for X570. Also, you have done a good job keeping the reference designs close to your vest whether it was intended or not. Couldn't hurt me to ask the people in charge.