Bip39 entropy https://papaly.com/1/eMEf Even though it uses BIP32 process you'll be able to nevertheless import BIP39 seeds into Electrum wallet. Also aside from BIp32 there is BIP44 version which some wallet use for that technology of seeds. Some wallets can import many seed phrases and many have only a person https://socialbraintech.com/story5063944/bip39-mnemonic-generator-python-not-known-factual-statements-about-bip39-mnemonic-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw