What are two mantle types?

Could you please elaborate on the two mantle types you mentioned earlier? I'm quite curious to understand the nuances between them. Are they related to some specific aspect of cryptocurrency or finance? If so, how do these mantle types factor into our understanding and application of these complex financial instruments? Also, would it be possible for you to provide some real-world examples or scenarios where these mantle types might come into play? It would greatly assist me in grasping the concept more thoroughly.