What are the 4 types of mantle?

Excuse me, could you please clarify? It seems you've mixed up some terminologies here. The word "mantle" typically refers to a cloak or garment worn over other clothing, especially in historical or literary contexts. It doesn't directly relate to the field of cryptocurrency or finance, and I'm not aware of any classification system that divides "mantle" into four types. If you're asking about something else, such as types of cryptocurrencies or investment strategies, I'd be happy to help. However, for the question you've posed, I'm afraid I'm unable to provide a relevant description or answer. Could you please rephrase your question or clarify what you're referring to? It would greatly assist me in providing you with an accurate and informative response.