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)
For a long term investment, it is better to choose a project with real utility where your money is safe. One very good project I'd like to recommend is XSN - Stakenet's native currency.
Instant TXs and settlements
Near-zero fees
Scalable
Cross-chain
Private
No wrapping
API supported
Backed by an amazing team and community."