Since the summer 2020, the decentralized finance (DeFi) appears to be the future full decentralized system for cryptocurrency. With DeFi protocol you can also access governance and farm your token to get rewards.
If the USDC seems to be the best stablecoin for centralized exchange (since USDT is the SEC's target, will see...), DAI seems to be the good one for DEFI. About Token, one of them the DeFi Yearn system is YFI (web 3.0 protocol) and PowerIndex introduced in december 2020 an ERC-20 token index for DeFi with $YETI (In addition percentage and token included can be ajusted) :
and with other token like SNX, AAVE,...: $PIPT :
An other index but not a token could be find with DeFi Pulse Index (Tokensets platform, I hope they could push their own token soon) :
Following this tendency, a new token will be introduce soon : $ASSY (Aave, Snx, Sushi, Yfi):
NB: For CeFi, you can find such an index with 5, 10 or 20 crypto-currencies including the boss BTC with the Bitpanda index (up to date monthly) in order to optimize your long term investment (for Europe). I hope the swiss platform, SwissBorg, will do the same soon with its A.I. system which can analyse the market...