Another year another try - missing media driver on windows 10 install xps 9380

Dell XPS 13 (9380) Ubuntu
Core i7 16GB 1024GB SSD 13.3"
(source, in swedish)

Last year I tried to install Windows 10 alongside my pre-installed Ubuntu (dual boot). After struggling a long time I felt I'd come to a dead end, and gave up. 

Today I tried once more, double checked everything, and tried some new things, but still nothing. Now, with WSL2 being released I no longer feel the need to have Ubuntu at all, if I just can get Windows 10 working. But I don't get anywhere.

Summary

• I have a Win10 bootable usb 3.0 , UDF, created with the official Media Creation Tool.
  usb-c
  
  
• I have downloaded all drivers I could find here and here, and also this Samsung NVMe Driver
  • I've put these on a FAT32 (also tried NTSF) usb 2.0

•  I am able to boot and start the installation. After choosing language I am prompted with the uninformative "missing media driver". In the folder explorer that shows up at this stage, I can locate the usb 2.0 with the drivers described above, but the installation does not seem to recognize anything of interest on it at all. I can see subfolders etc. but no files are "picked up" (edit: I now can find drivers after clicking around manually, but nothing seems to work. At first I hadn't unpacked the .cab file but now I have. So I see a bunch of inf files in various folders but nothing working)
  
• I have tried all permutations of usb-slots, moving them around but with no difference. I previously tried with a bootable usb 2.0 through a adapter, but had the same problem then.

Further notes

• AHCI is enabled
• Secure boot is enabled
• I have not been able to find any drivers on the whole world wide web for Samsung NVMe PM981 which is what my Dell laptop came with. The closest is what I linked above. I also saw this PM991 driver on Dell homepage. This I have not tried. 

My hope

I am completely stuck, since the installation does not say anything about which/what (?) driver is missing.

I own this laptop, which came with Ubuntu. I also own a Windows 10 license. But is the reason I have all these problem that I need a certain Dell Windows 10 ISO for 9380 which includes a bunch of magic drivers, and this is beyond my reach? Is there any way of getting my hands on it if I contact Dell and explain the situation?

Would it make any difference if I in BIOS perform a complete data wipe? But why would it make any difference? I'm willing to try it but I just feel that I need some kind of reasonable idea of why this would help me, before I cause more pain (throwing away my currently working Ubuntu).

I'm very grateful for any advice from the community or Dell official