It would certainly vary from one person to the next. The “typical person on Metformin” is a Type 2. It is the most widely prescribed drug for T2, and generally the first thing that is tried for T2’s. (It is used by T1’s too of course, but obviously prescribed much more for T2’s.)
T2’s do produce more glucose, and also have more glucose circulating in their blood from that over production than non-D’s. T2’s can often have glycogen cycling, which is where glycogen is simultaneously created and broken back down into glucose.
Metformin changes a lot of different things. It reduces glucose production, it reduces glycogen cycling, and it reduces gluconeogenesis (which is the generation of glucose from non-carbohydrate sources). It also changes the amount of cortisol that is available in the body.
In answer to your question:
Yes, the amount of glucose produced by T2’s is generally higher than it is in non-D’s. It varies of course, but it can be about twice as high in T2’s.