Graphics Card not showing up in System Information "about this mac"

Hello all,
I am having an issue I am unable to find answers to. I have a Gigabyte z370 HD3 and a Gigabyte RX Vega 56 gpu running with an Intel i7 8700k cpu. I have installed mac os using UniBeast and Multibeast and have had no issues with sleep, audio or much else. However, I notice that in the about this mac section, Graphics are set as Intel UHD Graphics 630 1536 MB instead of Gigabyte RX Vega 56. I also checked this in system information and the same Intel UHD Graphics 630 1536 MB shows up. There are no lights on on my MBD to indicate a failed GPU or connection so I suspect this is software. Is my graphics card not working?
Anyone help?
Thanks,
Doug