okay, so GLI Net has a list of dongles the team tested.
One of these dongles + one of these carriers: Carriers supported by GL.iNet physical eSIM should work.
If you have a eSIM compatible modem you should watch out for physicial eSIM (yeah, I didnt knew this existed) . A physical eSIM must be on the device to unlock the modem function to read from QR eSIM codes ( eSIM Management - GL.iNet Router Docs 4 )