We can see in the market that the best tokens are the tokens that are at the top of the cmc order this time. Like bitcoin, ethereum,
but for other coins such as doge, bnb and several any altcoins that can give you an advantage is good to trade. But if for investment
indeed we have to research more deep, in order to provide long-term benefits.
He is asking for tokens and btc is not a token. Projects under eth platform are considered tokens. So he has a lot of choices actually. Hard to suggest as he needs to study them carefully. If he wants, he can start checking the defi tokens here -
https://coinmarketcap.com/defi/.