The X13 Gen3 or Gen 4 (both AMD or Intel) are high-end devices. Both allow to ship without operating-system. // edit Double checked that. You can also select

The X13 Gen3 or Gen 4 (both AMD or Intel) are high-end devices. Both allow to ship without operating-system. // edit Double checked that. You can also select the OS for the T14s or T14-Intel. The decision of Lenovo for options are sometimes weird. It looks like that ThinkPads preferred for professional usage likely ship without operating-system. Maybe you look for already built-devices only? Look for the options upon CTOs devices - which makes sense - their built upon request. Sometimes you can also select Fedora or Ubuntu but I think the majority of Linux user prefer to setup the system itself.