Bip39 mnemonic to private key https://zenwriting.net/keenanctdp/how-to-create-a-bip39-seed-a-step-by-step-guide Although it employs BIP32 strategy you can continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 You can find BIP44 version which some wallet use with the era of seeds. This performs because BIP39 is supported by lots of wallet companies. https://bookmarkspedia.com/story6248921/bip39-min-js-new-step-by-step-map-for-bip39-standard-https-t-me-bip39-chat