Are you looking to find top 300 CryptoCurrencies by their category?!
If yes, I will recommend you to see this PDF file created by MatchCoins.info here:
https://matchcoins.info/300-crypto-map-matchcoins-info.pdf
It will give you a nice view of top 300 CryptoCurrencies based on their category.
For example if you want to find top coins similar to IOTA which are good for Internet of Things, then this file is amazing for you!
Cheers!
