Maximilian Noichl visualized the relationships between philosophers from 600 B.C. to 160 B.C.:
The Sociology of Philosophies is a fascinating book by Randall Collins, in which he attempts to lay out a global history of philosophy in terms of interpersonal relations between philosophers. These connections are layed out in the form of graphs. This my attempt to visualize a bit of that data, depicting 440 years of western ancient philosophy.
Green represents a relationship between master and pupil, and the red-ish color represents a more contentious relationship. The rest are less concrete. Dang, Sokrates.