Anything with a ASIX AX88772 chipset in it I think would be a good choice. It is what I'm using with u-boot (and works), and it has a driver in the kernel.

Also looking in the edk2 tree there also appears to be a driver for it at edk2/OptionRomPkg/Bus/Usb/UsbNetworking/Ax88772.

The one I have is a D-Link DUB-E100. I just had a quick google and it looks like you can still buy them.