Most people think Warren Buffett is a value investor but if you want to go into the particulars, one could argue that he is primarily a fundamental investor. Buffett famously said that growth and value are joined at the hip. Both are areas of fundamental analysis.
One could also argue that many business owners would not easily understand the question if you would ask if they focus more on growth or value in their capital allocations. Business owners simply allocate capital to the projects with the highest expected IRR, irrespective of any category you might want to fit it into.
Personally, I really like the framework put forth by the late Marty Whitman. In his opinion, there are are 5 main areas of fundamental finance:
- Value Investing (limited to minority positions in public co’s)
- Distress Investing
- Control Investing
- Credit Analysis
- First and Second Stage Venture Capital Investments
Warren Buffett, as an example, has been active in all of those categories, either directly or indirectly. Henry Singleton, as well, is someone you could not classify as a value investor specifically. He just went where he thought the highest IRR was at any given time.