None of the missing ones have proper, official, upstream LineageOS support. If you install LineageOS on these, you install somebody's own, personal fork of Line

None of the missing ones have proper, official, upstream LineageOS support. If you install LineageOS on these, you install somebody's own, personal fork of LineageOS. Which might be totally fine, of course. But because of the necessarily different signing keys alone, it's a (potentially) very different thing.