My favorite and most beloved laptop was the T60 with an IPS display. It was rock-solid, had a docking station, a swappable CD drive and battery, and PDF manuals for disassembly. I wish I could buy something cool now to run a *nix OS, but I cannot find anything good besides the MacBook Pro.
sounds like you might appreciate the ethos behind https://frame.work/
Might not meet your spec reqs but have you looked into?