How to list the plans via UI in PC 2.0?
How to get a Plan listing via API?
UI: Navigate from Product Catalog > Plans > Add Filter > Product Family
API: You can make use of the List item prices API for this.
List item prices
Returns a list of item prices satisfying all the conditions specified in the filter parameters below. The list is sorted by the date of creation in descending order. You can make use of the List item prices API for this.