Hello,
Which one of the following coins has a Ethereum-like potential:
1- Terra
2- Avalanche
3- Polygon
4- Moonriver
Thank you.
Easy Polygon for me
Polygon is an easy way to go if you want to trade either short or long term. Especially when more Polygon are widely used on new projects as their tokens and the chance of Polygon will going better is significantly higher if that's possible. It's just a matter of time Polygon will not be overshadowed with the other "Ethereum-like" coins.
All оf the projects you have on your list are better than Ethereum but ETH is now more reliable than all new smart contract projects,
That's why OP said "Ethereum-like"

? we are not talking about ETH here.