Might be a silly question because I'm a noob in this area, but:
Does this work with the official Ubuntu images or only Raspbian?
Does this work with the official Ubuntu images or only Raspbian?
I think it works great. Using the 64 bit 20.04 and now 20.04.1, I've had no problems with my 4 4Gb Pi4s (so many 4s!). You should be able to set up the wifi using netplan, although I do only run mine wired so haven't tried it.
Downloads here: https://ubuntu.com/download/raspberry-pi
64-bit is only supported on newer 3B and 4 devices and is missing some Pi-specific features.