Which crypto is built on Ethereum?

I'm curious to know, could you please explain which cryptocurrency is specifically built on the Ethereum blockchain? There are many different cryptocurrencies out there, but I'm interested in learning more about the ones that leverage the capabilities and advantages of the Ethereum network. It would be great if you could give me a concise and clear explanation about which cryptos are built on Ethereum and perhaps highlight some of the unique features or use cases that make them stand out.