Thanks.
@fabiosununfortunately that doesn't work for me. I tried your EFI exactly as it is except for my own MIMO Whitelist, Memory details and Serial numbers. It let me boot into Monterey but when I try and boot into the Ventura setup it just immediately reboots and on next startup goes to the macOS Monterey Recovery Console.
It did the first part, copying the installer bits to the SSD from the installer USB but on the reboot to continue the setup that it where it just immediately reboots and goes to the Monterey Recovery Console.
Attached is my own EFI (updated to OC-0.8.5) that boots Monterey fine but with non of the necessary Ventura bits added. When you have a bit of spare time would you mind looking it over and adding/removing what is needed for Monterey & Ventura?
Thanks in advance.