Thank you for sharing your experiences here. For new hardware we are seeing that iPXE needs to be rebuilt with the latest code from the iPXE project (different from FOG Project). That program manages the iPXE menu. For FOG, you also need to make sure you update the FOS Linux kernel (FOG Web UI->FOG Configuration->Kernel update) to at least the 5.10.x version of the kernel. This will allow FOS Linux (the engine that clones hard drives) to support the latest hardware too.
One last bit of information, you might want to upgrade to the dev-branch of FOG to bring your fog install up to 188.8.131.52 to address an issue if you plan on cloning Windows 20H2 or later. Microsoft changed the disk structure that requires the upgrade to FOG.