I think 0x59160000 are supported natively by osx, but it is hd 620 non UHD.
Also, i have experienced with UHD 0x59170000 that need to be spoofed as SkyLake.
Try to inject Fake ID 0x19160000 and ig-platform-id 0x00001916
That requires boot-arg lilucpu=8
If you have a patch to rename _DSM to...