Bip39 Mnemonic. You'd probably then do a standard recovery by using a command just like the 1 under. (This command utilizes a sample wallet file bunlded with BTCRecover) What constitutes a "very good wallet" is one which has crystal clear, very easy to access documentation on supported BIP expectations, derivation https://my-social-box.com/story4529417/ian-coleman-bip39-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting