I can see that other driver loaded, but neither picked it up.
kmod-rtl8xxxu if it existed in gl-inet’s package repository would have been a driver that doesn’t support only single chipset, but multiple. Hence I hoped that might have picked it up.
I guess you are out of luck in this case!
As I mentioned: Chipset needs to be supported in OpenWRT (and gl-inet) to make a good chance for a USB wifi dongle to work. Wifi is not really plug and play, because there’s a lot of different chipsets and therefore drivers and you can’t have all the drivers on these limited devices (both cpu wise and flash mem wise). So in pretty much any case you need some manual steps.