I think you want to ask "which token offers the highest staking rewards?" If that's the question then actually you might want to stake CRO coins as they have a big market value on coinmarketcap and you may read more here - https://crypto.com/en/earn.html

Please note while I give this advice I am not any financial advisor and staking can be risky too so take your own call, I am just sharing information as it might help you out. As for myself, I personally stake Tron (TRX) coins and value of the coins have been pretty good which makes it the right choice for me, but if you want higher rewards you might want to visit the link I shared as they claim to be providing upto 12% staking rewards on stablecoins.