I'd prefer to count all coins, rather than just circulating supply, which I think is misleading. Accounting for all coins to be released you have a top ten as follows:

1. Bitcoin
2. Ripples XRP
3. Ethereum
4. Veritaseum
5. Litecoin
6. Gnosis token
7. EOS
8. Ethereum Classic
9. Stellar
10. DASH

As you can see there's a bit there that are... overvalued. ETH tokens have some pretty ridiculous prices, and I think coinmarketcap has a lot to answer for with how it's misleading people.