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)
I'm curious why you want an intel cpu over an amd one
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)