Improve DX

The current implementation of the library has all specific types information as values inside the main object data class.

This is correct, but also requires "looping" to know which type the data is from (find which variable data class is filled in). This doesn't feel very convenient to use, but I am unsure how to improve this. To my knowledge a whole set of tags can only be from one type.

I have to use the library for a bit before getting a better idea how to improve this I think.