It seems like the unknown bitcoin cash miner is BTC.top and/or F2Pool. They started mining officially today and all unknown blocks are now starting to disappear. Maybe some of them were F2Pool, which joined too.
Anyway, 45 % hashrate moved to Bitcoin Cash, Segwit activation will postpone a few more hours.
http://fork.lol/pow/hashratehttps://cash.coin.dance/blocksQuestion: who is behind BTC.top private pool?