I think Ethereum has the largest chance of surviving in the future (smart contracts)
Zcash for privacy
Decred for governance
BTC for store of value.
It'll be interesting to see further categories beyond the above emerge.
Ethereum is after bitcoin and with it's smart contracts, it has the most potential of survive. Personally I don't like zcash and for privacy, as far as I knoe Monero is the best. Decred - ? Haven't heared about that coin. And oh, BTC isn't altcoin so there was no need of posting about it.
I would add Litecoin also..