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.
There shouldn't be any dispute about this, because it is already clearly stated by the market watch sites. So all you need to do, instead of debating on it, is to click on any of the sites, such as the most popular among all, known as, CMC.
When it is time for BCH tone the third, you will get know, but for now, it's market capitalization is still way lower than what is in third position.