Great summary! Just one thing is missing: Peter D. Gray also used the alias "Doc Hex" on LinkedIn and that profile it's still available
https://linkedin.com/in/doc-hex-04063811 and shows some interesting things.
Before becoming Coinkite's CTO, his profile listed two notable projects:
Hardware Keylogger: Wrote firmware for a stealth hardware keylogger (sold by an OEM, likely KeyGhost) that captured keystrokes independently of the host OS, embedded in dongles or keyboards.
KVM-over-IP Hardware: Developed remote-access hardware allowing full video, mouse, and keyboard control, even before the OS booted up.