Question: are all lga 1151 sockets the same?
Answer: Do note that LGA 1151 v1 and v2 are not cross compatible, though the socket is the same. You cannot run an 8th/9th gen chip on a 100 or 200 series board, and you cannot run a 6th or 7th gen chip on a 300 series board. (6th and 7th) gen are cross compatible, and (8th and 9th) gen are cross compatible.