Bip39 format example https://www.sbnation.com/users/typhanhmdy While it makes use of BIP32 technique you'll be able to still import BIP39 seeds into Electrum wallet. Also other than BIp32 There is certainly BIP44 version which some wallet use for your era of seeds. BIP39 simplifies important administration by changing extended cryptographic details with https://socialistener.com/story5737645/bip39-vs-slip39-reddit-detailed-notes-on-bip39-wallet-https-t-me-bip39-chat