Have a p14s (older gen) and it runs very well on linux. Im running fedora which lenovo sells prepackaged so you get firmware updates and bios updates through rpm. I would say any linux Thinkpad would be a solid choice. I would just suggest getting one without soldered ram so you can upgrade or repair. Also check the panel brightness too because my display is shit.
Its slower
Genocide as a Service
I have the ASUS USB-BT500 and it officially supports linux and works very well. Buy that
Having just done this for whatsapp and discord, its a pain in the ass but nice once it is setup.
Bazzite or nobara. Bazzite just works, nobara is a bit more flexible with what you can install easily
It is good for answering simple questions. It isn't a search engine its more of an answers engine wherby you ask something and it will do the search and procure the answer from the results. It works well most of the time however like all AI it hulicinates so if you ask it something too complex it isnt very good.
Please pay the licensing fee for ongoing development if you plan to use for an extended period👍