I would definately choose Kamman. Some of these other chefs may have lead a more adventurous life, or may have been more influential, but Kamman is a true teacher. She has devoted her life to educating both professionals and amateurs alike. While these chefs were in the spotlight (many times) Kamman silently brought the pleasures of great food to many, many people. It is only in recent years that she has become recognized as a moving force in this industry. Besides, out of these four individuals, I imagine that she would be the most fun to sit down with, drink a few glasses of wine, and just chat.