copyright Seed Phrase Generator Even though it takes advantage of BIP32 system you are able to even now import BIP39 seeds into Electrum wallet. Also other than BIp32 You can find BIP44 Edition which some wallet use to the era of seeds. So it's up to you to think about https://socialbuzzfeed.com/story4195229/trust-wallet-seed-phrase-generator-free-not-known-facts-about-bip39-phrase