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)
If you are looking for safe and long term investment, I recommend you stick on the well-established altcoins and has been around in the business for several years already. Very good examples are ETH, LTC, XRP, ADA - my portfolio is packed with these coins. I am also keeping a fair amount of Stakenet's XSN in my bag. An underrated hidden gem which I believe will going to pump real big in the coming months.