does Citi specify which retailers count as a retail purchase when you make a physical purchase?

I know Costco won't count but will other retailers count as a retail purchase despite Citi breaking down the specific categories?

For example, HomeDepot will code as home improvement, others will code as sporting goods, entertainment, etc. If you make a physical purchase at these stores, will they all count as retail? Or does Citi have a special retail category which only specific retailers fall under?