Bip39 Seed. You should then do a primary recovery with a command such as just one beneath. (This command takes advantage of a sample wallet file bunlded with BTCRecover) What constitutes a "very good wallet" is one that has obvious, straightforward to accessibility documentation on supported BIP criteria, derivation paths, https://social-lyft.com/story8485709/bip39-mnemonic-https-linktr-ee-bip39-5-essential-elements-for-bip-39