Bip39 mnemonic online https://jaspermuxp089.yousher.com/top-5-online-bip39-generators-for-effortless-copyright-security Although it makes use of BIP32 process you may nonetheless import BIP39 seeds into Electrum wallet. Also apart from BIp32 You can find BIP44 Variation which some wallet use to the technology of seeds. BIP39 is like a chance to “browse” and realize the seed phrase. https://zenwriting.net/keenanctdp/how-to-create-a-bip39-seed-a-step-by-step-guide