Bip-39 Regardless that it uses BIP32 technique you'll be able to however import BIP39 seeds into Electrum wallet. Also in addition to BIp32 there is BIP44 Variation which some wallet use for the technology of seeds. On top of that, do you belief the builders developed a adequately random RNG? https://bookmarkleader.com/story18651642/bip39-seed-phrase-generator-the-smart-trick-of-bip39-phrase-that-no-one-is-discussing