I use a NovaCustom laptop. As far as I know these are the highest end laptops that work with a Linux-libre system. I was interested in the Framework 13 (which I think can accommodate a Linux-libre friendly wifi card) but it's too small for my tastes, however a Framework 16 with an Intel CPU would be ideal if/when it comes out, though.
In my experience Intel graphics have better compatibility with Linux-libre. I'm unsure about Linux-libre on AMD; according to at least one report it requires firmware blobs, which I'd rather avoid.
(I'm aware that firmware blobs are unavoidable with modern-ish hardware but I'd prefer to avoid as many of them as possible)