1) Bitcoin
2) Ethereum
Are the only two coins I can confidently say will make it past that time. For all others it is unknown as this industry moves quite rapidly.
3) Litecoin
4) Monero
Those are no newcommers so will endure a two years timespan, too. This Nr.3 seems to be present at any bigger bitcoin mining location kinda as a hedge for asic investments.
And Nr.4 beeing the fallback if centralized mining was the wrong answer on all decentralisation matters.
More options for the adventurous:
5) Zcash as an alternative to Nr.4 if you can stand mining subsidy.
6) IOTA if they survive their infancies which is looking worser every day.
7) Waves, Komodo, Ardor but that seems to meander, not so sure about these.
8 up until 15) Stuff small change into different ICO gambles. Remember NXT!