Bip39 Seed Though it uses BIP32 technique you'll be able to still import BIP39 seeds into Electrum wallet. Also other than BIp32 There's BIP44 version which some wallet use for your era of seeds. Listed below are five tips on how to make a seed phrase, with an in-depth discussion https://yoursocialpeople.com/story4088704/bip39-wallet-app-helping-the-others-realize-the-advantages-of-seed-phrase-generator