So I got everything working. I didn't follow this guide in particular, but I was able to do a fresh install, no problems, well except this. I'm running into an issue where my resolution is set to 1920x1080 when configured for VNC, however once I setup GPU passthrough, it's limited to 1280x1024.
Any suggestions? I double and triple checked OVMF and Clover matched at 1920x1080. Not sure what else to do ??♂️
EDIT: Figured it out. I have a dummy HDMI plugged in to my GPU to turn on audio. For some reason it's limited on macOS (works fine when routed to a Windows host). Swapped it for a DVI and I got glorious 1080p.