First and foremost any project must have a big supportive community, second you must have a working products and good use cases. Popularity should always updated by the marketing manager. With all these things taken into consideration there's a big chances of a growing price of any altcoins.I have a friend who invested in one of the best blockchain project
https://ilcoincrypto.com/ , this is one example of a good altcoins that increases it's orice every year.