Is it possible to save a set of variation to be used to other listings?

New to Amazon. My product has a lot of variations. I tried duplicating/copying my first listing to make a second one to speed up the process (I am not duplicating my listings to publish, just they have similar attributes and variations so it makes sense for me to duplicate and just make edits) after I duplicate, variations were not copied and looks like I need to enter them one by one again for the second listing.

How can I use a set of variations across all listings?

Another question (this is not related to variations though). I do not have an LLC yet so my business name is my full name and it’s displayed public in the seller info. Is having an LLC the only way to use my store name as business name or hide my full name atleast? for privacy. I am selling in US but I am from US.