This project is all about researching different types of domain categories and streamlining them into more generic ones.
We need two-level categories (Category and Subcategory) as illustrated below:
Health -> Health Insurance
Health -> Health/Medical Products
Health -> Health Services
In this example if you notice "Health Insurance" is redundant because it could fall under Health Services, and products are different from services thus it deserves a category
Note - Categories could be overwhelming. For example this source ([url removed, login to view] ) has way too many and that is not what we really need. You must be able to thoroughly research and generalize them. This is just a reference and by no means it’s the only resource you should follow.
We recommend you research popular sites like godaddy, sedo and come up with reasonably streamlined categories with ZERO typos/misspellings.