Bip39 Mnemonic. While it uses BIP32 strategy you could nonetheless import BIP39 seeds into Electrum wallet. Also aside from BIp32 There exists BIP44 Variation which some wallet use with the technology of seeds. These words are pulled from a particular list of 2048 words. They can be found right here https://elliotjhvjw.pennywiki.com/4316275/the_anatomy_of_the_bip39_phrase_entropy_words_and_phrases_and_safety