Sliced ham is cut from the big piece. And you’re right, aside from Christmas, ham isn’t usually glazed. I guess there’s sugar in the pot when the ham is cooked, so I think my advice is right - the sugar will not have penetrated far
I guess I haven’t thought much about sugar in smallgoods, as it was within the 20g allowance on keto (even with a bowl of salad) and now I’m on “zero carb” I don’t bother with ham because it doesn’t have enough fat