Check out Darths substack.

https://darthcoin.substack.com/p/stacking-sats-noob-journey

Another important aspect is that stacking on LN could offer a good level of privacy, because you can consolidate larger amounts and then send them through a swap service to your onchain vaults. Even non-KYC but custodial LN accounts could be used very well as decoy temporary stacking level until you accumulate a certain amount of sats to be moved to your own onchain wallets, in full self custody.

yes. LN withdrawal to service such as coinos.io then send when large enough to service such as boltz.exchange

A custodial lightning wallet doesn't eliminate the kyc trackability, it merely transfers that trackability (from the original exchange to the Lightning custodian). If you don't trust the original exchange with your privacy, but you do trust the Lightning custodian, then this is sufficient.

If you don't want to trust ANYONE with your data then you should coinjoin your on chain funds with Wasabi Wallet or BTCPay Server's coinjoin plugin (and then open Lightning channels with your coinjoined funds if you choose to add another layer of privacy).

use Lightning Network