Sup stackers!
Check out this new guide we made. We tried to make the mother of all guides to the various bitcoin testing networks. If you all haven't tried some of these I really recommend it. Bitcoin28 and Testnet4 downloads the entire block in like an hour. It's a thing of beauty.
And MutinyNet for testing lightning apps is almost as easy as Polar.
I hope you all find it handy.
It took forever to make and has loads of useful tools, faucet recommendations, all kinds of stuff:
https://velascommerce.com/bitcoin-test-networks-comparison-regtest-simnet-signet-testnet3-testnet4-and-mutinynet/