Allow Competitor Categorization in List and Matrix Views

Our product touches a number of different markets. Within those markets we have many competitors, but each only compete in a certain way.  Having all competitors (there's a long list) without the ability to categorize them is very cumbersome.  It would be extremely helpful if we could create simple categories within which a competitor would live.  Any competitor could live within multiple categories.  The matrix view would ideally allow filtering based on categories as well.  

Doing this would allow our company to achieve a comprehensive overview of competitors while maintaining critical clarity across a complex landscape.