I bought a Lenovo last year to install Linux on. I’ve never heard of most of those, but I have been keeping an eye on System 76 for years and researched their offerings.
I don’t recall everything that made me go with the Lenovo, but after my last (Dell) laptop started developing issues that appeared to be related to it flexing, I wanted something with a stronger case, and System 76’s laptops appear to have plastic cases. I help run a trade show-type thing, and I sometimes walk around with the laptop, and I will occasionally balance it with one hand, while entering info with the other. I think the case started flexing, and the touchpad (I’m guessing) started giving spurious inputs, causing all kinds of headaches last year. So I wanted something with a solid case like my old aluminum body Macbook Pro had.
I recognize this is limited requirement, most people aren’t going to have this issue.