Hello
@Leesureone , I've got 2x other nuc's up and running with Mojave. One using a really old Bios thanks to Rehabman, and one using Bios 71 (thanks to you about 4 weeks ago)... The newest Nuc is using bios 77!
This one is my first at trying to use Catalina. I've done exactly as you said, I built a USB using unibeast, then copied over and replaced the existing EFI folder with your Clover EFI folder.
I configured my Bios as required (I believe because i got it as close to my 71 as I could) and upon 1st boot it took about 60 min to reach the progress bar all the way across the screen, I rebooted the system due to impatience. Upon Second boot, i went ahead and did a -v where the last line it has come to now reads:
IOHDIXController: NOTE: administrator is creating non-electable disk image
Any idea's or help you've got would be super appreciated!