Formato bip39 https://rentry.co/p68weyby Though it uses BIP32 process you could even now import BIP39 seeds into Electrum wallet. Also besides BIp32 You can find BIP44 Model which some wallet use with the generation of seeds. As opposed to standard wallets derived exclusively from a seed phrase, passphrase-shielded wallets are concealed https://wisesocialsmedia.com/story5661196/ledger-nano-bip39-not-known-factual-statements-about-bip39-word-list-txt-https-dzen-ru-bip39-phrase-com