Bip39 https://www.demilked.com/author/gobnettlmz/ Though it uses BIP32 approach you are able to still import BIP39 seeds into Electrum wallet. Also in addition to BIp32 There's BIP44 Model which some wallet use with the era of seeds. bip39-phrase.com is surely an informational site committed to technologies and tools for protected copyright storage. https://thesocialcircles.com/story5928994/bip39-ledger-not-known-details-about-bip39-generator-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw