Bip39 encoding https://www.demilked.com/author/gobnettlmz/ Although it uses BIP32 approach you are able to still import BIP39 seeds into Electrum wallet. Also other than BIp32 You can find BIP44 Model which some wallet use for your era of seeds. For example, should you initially build your wallet and produced seed employing Ledger https://webookmarks.com/story6190174/bip39-library-bip39-compatible-wallet-options-https-x-com-tundra838554