Bip39 format example https://edgargvkh682.theburnward.com/a-novice-s-overview-to-getting-a-bip39-mnemonic-expression Despite the fact that it uses BIP32 strategy you could continue to import BIP39 seeds into Electrum wallet. Also besides BIp32 There's BIP44 version which some wallet use to the era of seeds. BitBox02 - A successor for the BitBox collection, this hardware wallet support... https://socialexpresions.com/story5398622/bip39-full-list-an-unbiased-view-of-bip39-2048-words-https-x-com-tundra838554