Hmm, why is it an ISO, rather than getting the drivers from a server afterwards? I have a few devices that need proprietary drivers, do I need to do the same for the others?

The download page states:

"If you have NVIDIA graphics, download the ISO with the proprietary NVIDIA driver preinstalled."

There is also a non-Nvidia ISO:

https://iso.pop-os.org/22.04/amd64/intel/31/pop-os_22.04_amd...

As well as Raspberry Pi:

https://iso.pop-os.org/22.04/arm64/raspi/4/pop-os_22.04_arm6...