1. Bitcoin (BTC) Bitcoin has been around for the longest of any cryptocurrency.
2. Ethereum (ETH) Ethereum is different from Bitcoin because it isn't only a cryptocurrency.
3. Binance Coin
4. Cardano
5. Polkadot (DOT)
6. Ripple (XRP)
7. Litecoin
8. Tron (TRX)
9. Polygon (MATIC)
10. WazirX (WRX)
BTC will always be the king of cryptocurrency and is definitely going to stay here for the long haul. There's no doubt about that.
Aside from Bitcoin, ETH, ADA, LTC, and BNB are notable coins too in terms of their cutting-edge technologies and use cases. I might as well mention this sleeping giant called XSN, the native crypto of Stakenet. A steady growing project that also holds massive growth potentials.