This is less "inaccurate" than fundamentally conceptually flawed. Human ideological systems are not like biological systems that speciate through schism. They are creations of living human minds and societies that piece together ideas that they find meaningful and useful.<p>So this chart lists a couple of major sources: Chinese folk Taoism, Japanese mythology, Shramana traditions (non-vedic), Early Vedic period, and Ancient Israelite religion. Most of these traditions have been cross-pollinating, merging, and re-dividing for millenia. Yet this kind of visualization can only depict schism, not influence.