What have I done now?

Hey, you collect what you want to collect. I just want to cut through commercial fluff so people know just what they collect.
I see some minor differences that together suggest different dies. The most obvious are the letters ALS below the ground. Less obvious until you have seen it is the distribution of the 5 between the ring and the pill. Other stuff me be just the light.
I would actually have expected to see different differences

The Oom Paul press is older technology. I would have thought that it would be better at striking slowly, but worse where it comes to setting an exact pressure, resulting in a milky field and a slightly less detailed or a slightly too sharply outlined higher part.
As for your previous question, I would define a variety as all differences that are neither errors nor significant enough to constitute a type. Here too, it depends on your taste what you want to collect. This is a fine example of my argument that "complete does not exist".
Peter