Bip39 mnemonic https://files.fm/u/2eemhhak2q#design While it takes advantage of BIP32 technique you could continue to import BIP39 seeds into Electrum wallet. Also aside from BIp32 there is BIP44 version which some wallet use for your technology of seeds. This works due to the fact BIP39 is supported by countless wallet manufacturers. https://doctorbookmark.com/story20061665/bip39-docs-bip39-ian-coleman-for-dummies-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw