Android supports Ethernet over USB-C, but a quick Google search seems to suggest that performance is lacking. I found this odyssey of some developer trying to reach someone at Google to get it fixed, but they keep giving him the ol' runaround. Works fine on Apple devices though.
* https://support.google.com/android/thread/251842240/ethernet...
* https://support.google.com/googleplay/android-developer/thre...
* https://issuetracker.google.com/issues/319406707