Bip39 Standard. The passphrase is not really selected within the predefined list of 2048 words – it could be any word or phrase you select. What constitutes a "very good wallet" is one which has very clear, straightforward to entry documentation on supported BIP benchmarks, derivation paths, and recovery processes. https://bookmarkuse.com/story18692183/bip-39-https-linktr-ee-bip39-the-2-minute-rule-for-bip39-word-list