If you are interested in changing the paper type of all your products, or you would like to change the option names you are offering your customers, contact your CSM. We can support you with the change!
We don't have a feature for you to do it manually in bulk so you would need to do it one by one, until we develop an open solution, we can do the change internally for you.
To change the prices of your products in bulk, you can utilize the Price Navigator
Please, contact your Customer Success Manager for more details, and we will make the product type or variant name change for you.