Huawei E3372 or 3370 in HiLink mode work just fine (if you are using just single dongle. There is some issues if U are planing to use 2 or 3).
Modem just add ETHxx interface to the Network section of GUI. U need to spec Gateway to this link (normaly it is 192.168.8.1 if U do not want to play some magic with modem firmware)
I think that almost any 4g modem with built-in RNDIS will work