I had these parts made for a project I am working on and the manufacturer claims they are 'autoclave dry carbon', which should mean pre-preg, but to my untrained eye it looks like regular vacuum bagged wet infusion. There are tiny bubbles along the edges and the outer clear resin layer seems thicker than what I would expect a pre-preg.

Are there any carbon experts out there that can help me identify what process they used to make these parts?

       

Are we talking about infusion or about vacuum bagged parts? As I said above, I doubt the parts are vacuum bagged wet layup parts.
Infusion is a different thing. from the pictures I would say, that the outer resin layer is to thick for an infusion without gelcoat. Seems to me more like a resin rich surface prepreg. Such small bubbles at the corners could happen with both processes. If you use a special black polishing compound instead of a regular white, they should become almost invisible.
you could still test it with the heating method.
Usually prepreg is much more convenient for small parts, so i wonder why prepreg is significantly more expensive.