The type one wheel that was fitted to the majority of Volts did not have inserts.
I believe the type two wheel with inserts was an expensive option.
On the other hand, I believe all Amperas were assembled with type two wheels and inserts.
They are both pretty well the same car under the skin - If I could afford two, I would have one of each, and if I could afford three, I would add a series II Chevrolet Volt (2016-2019) to the stable!
I saw an example of the latter in the UK last year and it looks the dog's whatsits . . .