At least some Chromebooks have coreboot by default, but it needs nonfree Intel blobs of which some are signed. (Some unsigned blobs were replaced for Chromebooks and some more for X201.) I have no hope for a modern Intel system to be fully freed.
Some non-ThinkPenguin wifi card vendors name the chipsets, but it's not easy to get them: the same devices have different chipsets in different versions and version numbers aren't always shown. There are rare Ethernet cards that aren't supported, probably most laptops won't have this issue.
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