Bip39 Mnemonic. The passphrase is just not chosen from the predefined list of 2048 words – it could be any word or phrase you choose. What constitutes a "superior wallet" is one which has very clear, very easy to access documentation on supported BIP benchmarks, derivation paths, and Restoration procedures. https://bookmarklinx.com/story19657440/bip39-words-https-linktr-ee-bip39-bip39-words-fundamentals-explained