Interesting cube subdivisions: what is going on here, and what are these polytopes?

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I was messing around recently with a unit cube.

If you draw vertices on the midpoint of each edge of the cube, then connect those points by new edges, you will form the wireframe of what I figured out is a cuboctohedron. If you repeat this process on the cuboctohedron (drawing vertices on the midpoints of the edges of the cuboctohedron and connecting them with new edges, you form the wireframe of what I discovered was the rhombicuboctohedron. Repeating this, you end up on the 3rd iteration with another polytope which eludes my identification.

I started drawing net maps of these things and I still don't know what the 3rd+ iteration polytopes actually are. The vertices, edges, and faces are as follows for each iteration (if this helps).

iteration: 1 , 2 , 3 , 4 , 5 ...

vertices: 8, 12, 24, 48, 96, 192 ...

faces: 6, 14, 26, 50, 98, 196 ...

edges: 12, 24, 48, 96, 192, 386 ...

I can't wrap my mind around why this creates these polytopes. Any ideas? Also, what are the polytopes in the 3+ iterations?

Thanks, in advance.