It seems like you're asking for 20 types of cryptocurrency. Here are some:

1. Bitcoin (BTC)

2. Ethereum (ETH)

3. Ripple (XRP)

4. Litecoin (LTC)

5. Bitcoin Cash (BCH)

6. Cardano (ADA)

7. Polkadot (DOT)

8. Chainlink (LINK)

9. Stellar (XLM)

10. Dogecoin (DOGE)

11. Binance Coin (BNB)

12. EOS (EOS)

13. Monero (XMR)

14. Tron (TRX)

15. Tezos (XTZ)

16. VeChain (VET)

17. Solana (SOL)

18. Theta (THETA)

19. Neo (NEO)

20. Algorand (ALGO)

These are just a few examples, as there are thousands of cryptocurrencies out $BTC