I'm a bit taken aback. Confucianism isn't a philosophy? I suppose I could grant that many of what seem to have been schools are now impossible to confirm and so we can not with certainty define them as one thing or another. Moism being the obvious example. But it seems pretty clear to me that we have the surviving evidence to show that even Legalism and Daoism were philosophies merely different in flavor to Greek and Indian variations.