Bip39 docs https://www.storeboard.com/myrtierisaliti Despite the fact that it uses BIP32 technique you may continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There exists BIP44 version which some wallet use for that era of seeds. Some wallets can import many seed phrases and a few only have https://ok-social.com/story5698219/bip39-random-word-generator-indicators-on-bip39-ian-coleman-you-should-know-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw