Opencore EFI for T450s and X1 Carbon 3rd Gen. Tested with Monterey
Why do you think that https://github.com/devboloji/Lenovo-Thinkpad-T450s-Hackintosh-Opencore-Guide-Maintaining is a good alternative to Thinkpad-T450s-Opencore-0.8-English-Intel-WIFI-Monterey-Hackintosh