Bip39 hardware wallet https://ameblo.jp/generate-bip39brooks/entry-12913353546.html Despite the fact that it utilizes BIP32 process you can still import BIP39 seeds into Electrum wallet. Also in addition to BIp32 There is certainly BIP44 Edition which some wallet use for the generation of seeds. Vault12 could be the pioneer in copyright inheritance management. Check https://ztndz.com/story26161418/bip39-chinese-bip39-compatible-wallet-an-overview-https-cutt-ly-uryc5rw7