Bitcoin Gold? What the heck is that? I've never heard of it before. Btw, on marketcoincap, BTG is assigned to Bitgem.
Bitcoin Gold is a fork of bitcoin just like Bitcoin Cash. One of the notable changes is that they have changed algorithm to Equihash which makes it asic resistance and its a memory intensive algorithm. The idea is to bring back GPU mining plus some other changes.
don't we already have a coin that does the exact same thing and has segwit activated? bitcore (btx)