I don't think any current coin can be the next Ethereum. There were so many things like that in the past. Couldn't compare anything to Ethereum, and failed.
Yes, besides the Ethereum token has also developed gradually and has passed a lot of obstacles and challenges in crypto, so it is really strong to compete with other Altcoins in crypto, so that until now none of the new tokens can fight against Ethereum.
The problem is all these challengers failed to mount a good platform before ETH went on its 2.0 upgrade. Now all the old problems will be fixed within a year. No more high fees. No more expensive mining. No more congestion.
The only advantage others can prove after this will be security.