I think that with time the third will be EOS in many respects, if the team does everything that it promises, then this coin certainly will be very high!
There are 3 candidates that I think would be great for long term investments after ethereum.
1.BCH
2. NEO
3. Daneel
I think that Ripple should be on the honorable second place. In the past year, Ripple has already overtaken ETH for capitalization.