Update Price List names

We have a requirement to assign Privileges to Price Lists as we are enabling Pricing Security feature to restrict price list access by Operating Unit. I need to group the Price Lists into Entity sets in order to assign them Privileges, and so that when ever a new price list is created, it automatically falls into one of the Entity sets and gets a privilege.
Our Price List are named after customer names as of now and we can't figure out a common criteria to group them. We are planning to update the Price List names to enable grouping.

For example, for a price list 'Walmart Wholesale' belonging to 'NBL' operating unit, new name would be 'Walmart Wholesale NBL' .