Bip39 Docs. While it uses BIP32 strategy you could nevertheless import BIP39 seeds into Electrum wallet. Also aside from BIp32 there is BIP44 version which some wallet use for the generation of seeds. Due to their strong design and style and simple-to-use interface, two Ledger wallets have made our list https://dallasnyjsc.azuria-wiki.com/1100293/the_anatomy_of_a_bip39_phrase_entropy_text_and_protection