Qualities of "Pay to Nested Witness Key Hash" The lightning dev tutorial mentions the np2wkh or Pay to Nested Witness Key Hash address type, and I would like to find out more about it, so far without success.

Can anybody explain how they are different from other address types, e.g. P2PKH or P2SH?
Nested P2WPHK is just the normal P2WPKH embedded within a P2SH, to make it compatible with older wallets which don't recognize native witness addresses (bech32). Check out this for more info: https://bitcoincore.org/en/segwit_wallet_dev/#creation-of-p2sh-p2wpkh-address