The ESP8266 does not have enough GPIO pins to drive an 8080-8 interface.
I have no idea how the ESP8266 module is connected on the Uno-Wifi or WemosMega board.
Do you have access to the regular D2-D9 and A0-A4 pins that the Shield requires?
The Shield should work on any regular Arduino with the MCUFRIEND_kbv library. If it works with MCUFRIEND_kbv, the UTFTGLUE class should work too.
I have no idea why anyone would ever want to write a new project with UTFTGLUE.
It is handy to port a legacy UTFT project because MCUFRIEND_kbv supports a lot more controllers.
David.