See also the Hasselblad X1D ISO series of this same scene.
In my review of the about $6495 Fujifilm GFX in the medium format section is now published an in-depth ISO series for the Fujifilm GFX:
Fujifilm GFX ISO Series from ISO 100 to ISO 12800 (Dolls)
Definitely worth a read for high ISO shooters considering medium format, particularly my analysis of the RawDigger histograms across the ISO range, and my take on the Hasselblad X1D vs Fujifilm GFX.
f11 @ 1/4 sec, ISO 100; 2017-03-06 15:43:21[low-res image for bot]
GFX 50S + Fujifilm GF 63mm f/2.8 R WR @ 51.6mm equiv (63mm)