Bip39 entropy https://rylanmecp341.wpsuo.com/bip32-vs-bip39-which-is-better-for-your-copyright-demands Though it makes use of BIP32 system you can continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 You can find BIP44 version which some wallet use for the generation of seeds. BitBox02 - A successor for the BitBox sequence, this hardware wallet supports https://thesocialcircles.com/story6261090/bip39-vs-electrum-how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-english-word-list-https-x-com-tundra838554