Bip39 explained https://www.demilked.com/author/gobnettlmz/ Even though it works by using BIP32 method it is possible to nonetheless import BIP39 seeds into Electrum wallet. Also other than BIp32 There's BIP44 Variation which some wallet use with the generation of seeds. BIP39 solves this by making use of human-readable seed phrases made up https://fatallisto.com/story10114010/bip39-private-key-recovery-tool-the-single-best-strategy-to-use-for-bip39-generator-https-dzen-ru-bip39-phrase-com