Best altcoins for 2020 in my list is :
Eth
Ripple
Ada
Neo
Vechain
Cardano
Tron
Dash
Iota
Eos
Stellar
Those coins is own their network . Then, this coins has a huge market capital so those coins has a high volume.
why did you add only old projects to your coin list. there are too many good news in the world of cryptocurrencies now and we can find too many altcoins to invest. those coins that you named have already stoped to be relevant in the market, eccept TRX