Bip39 documentation https://list.ly/i/11078004 Despite the fact that it uses BIP32 strategy it is possible to even now import BIP39 seeds into Electrum wallet. Also besides BIp32 There may be BIP44 Edition which some wallet use to the generation of seeds. For the reason that adding a passphrase towards your seed https://admiralbookmarks.com/story20049900/bip39-passphrase-github-bip39-compatible-wallet-can-be-fun-for-anyone-https-x-com-tundra838554