Have you guys noticed Mantle yet?
This mainnet has been running since last year and is developing really fast. The project is modularized, runs on Ethereum, so it has high speed, low fees, and is quite stable.
What's noteworthy is that the ecosystem is starting to get crowded: there are DEX, lending, farming, and so on. TVL is increasing steadily and not dying out like some other chains. The good thing is that it has support from Bybit and BitDAO, so funding isn't an issue.
MNT is actually the token of Bybit – one of the top exchanges currently. Exchange tokens that get pumped usually go very far, and with a strong community, it's even easier to create waves.