Cryptos that work alongside ETH, that will rise along with ETH

I’m not interested in cryptos that are ‘eth-killers’. In my mind, that’s like marketing as a project that will weaken as ETH continues to rise and gain adoption. Not a sound investment.

There are other blockchain projects with great developers and promise, but this almost logically requires ETH to fail and claim less market cap. Been intrigued by things like HBAR or ONE but investing in those seem counter to my ETH holdings.

Besides tokens within the ETH ecosystem like Uniswap or AAVE, what other projects work alongside ETH in a manner similar to Chainlink?

What about tokens that focus on a niche that ETH does not specialise in, along with interoperability on the ETH network?