Here are some of the most promising projects currently below the ranks they actually deserve. You may see them exploding anytime.
1. Stellar (XLM)
2. Fantom (FTM)
3. Zilliqa (ZIL)
4. Chainlink (LINK)
5. Polkadot (DOT)
While making a portfolio, always give room to the underperforming projects with real utilities plus highly innovative and scalable network.