Embarcadero C++ Builder data structure that can store different complex data types

Question

I am using C++ Builder 10.2.3. I need to store from simple to complex data types, and restore them:

int
float
.
.
std::vector<int>
std::vector<br::Transform*>() /* Transform is a user created class*/
etc...

I already tried Variant and TValue. Unfortunately they cannot store and restore complex data like std::vector<br::Transform*>(). And I cannot create new Variant types for each of them as I explained in a previous question. There are too many of complex data types!

Any hint?