As a matter of fact, there is an Object() formula now 
It’s hidden because it’s added in preparation for a bigger update, but it’s there
However, there seems no “legal” way to extract a name by value yet. There’s only this _Deref_Object(), another hidden formula, but it cannot look into nested object (the parameter path is not really a path but only a top-level key, and you cannot chain multiple _Deref_Object()s):
