In my view if there are coins deserve to hold more than 3 years not only 5 options even possible we will see more than it but indeed usually people stick to high position on coinmarketcap and i do agree with them because if we pick the coins which have high volume of support then that would be good although there is no guarantee from it but usually those coins will be popular and if we hold it then it will be less of risk however for top 5 i think here is my pick below

ETH
XRP
BCH
XRP
ADA