You could check out the suggestions here https://github.com/drduh/macOS-Security-and-Privacy-Guide

Turns out I’m just an idiot. After trying a hail mary test of moving the keyboard nib into the back of the motherboard (again) the keyboard let me navigate through BIOS. Of course, all the USB settings were enabled lol and then I went to check the USB cable coming from the KVM, it had come partially unplugged.

Gotta love good ole user error!