Is Ethereum second?
If so wich Cryptocurrency Will be third, 4th. 5th.??
What You think wich coins are competing with Ethereum?
I Think Ethereum and Bitcoin are number one!
3rd. I Think its a BCH.
Giving a number depends on what point of view will be calculated. If calculated in terms of price and daily volume, then Bitcoin ranks 1. If calculated based on supply, maybe Bitcoin ranks to 1000. If calculated based on prices, bitcoin number 1, number 2 Maker, and BCH number 3.