In fact, there's a composer who does that, Matt Uelmen, listen to this composition,
Diablo 2 - Wilderness
there are several sections within the same composition, something like A, B, C, D, E, F, G, etc. Note that none of these sections has a melody / harmony similar to the previous section, each section presents a new harmonic and melodic material.
I don’t know the name of this style of structure or composition, but i would like to know!