When I get a new camera, I establish processing parameters, particularly white balance and tint, because these can vary by camera. In fact, the Nikon D850 requires a significantly different white balance than the Nikon D810, at least in Adobe Camera Raw.
This page is extremely interesting as to the value of using ISO 31 vs ISO 64; see the tips. Actually, I think it is of general interest for any camera for its findings, in that other cameras might behave nicely at a 'Lo' pseudo-ISO, or not.
Update: I’ve added the (quite different) Nikon D810 settings. The Nikon D850 does not behave the same as the Nikon D810 in terms of color temperature and tint needed for proper white balance.