Was there bitcoin cash during 2017? I mean there was but wasn't it late to the party? It came out during summer I believe which means the coin wasn't even there for the first six months so I don't know how reasonable it is to put them there.

Aside from that I think putting "tether" into the top coins is also not reasonable considering that is not exactly a coin but something we base the dollar on so we can actually trade via dollar instead of actually using dollar, it is basically just a token, a symbol. Some of the coins are surprise to me like I wasn't expecting cardano there but it is, so sometimes most unexpected coins can achieve more than you think