Selling the same product under the variation but with different backcards

Is it acceptable to have a product under the same listing and same variation have slight differences between non-essential elements? For example, if I am selling a dog toy, but the dog toy has 2 different variants of paper backcards (e.g one has more text, one has less text, or one is bigger, one is smaller), is it acceptable to sell it under 1 product and 1 variation? Tried to ask amazon support but got 2 different answers.