There are also other texts besides the ones listed in that Wikipedia article that may not be the most important, but are significant. I’ve never heard that the I Ching was a confucian text, and in any case there are others probably of greater importance after the Analects – see the Dover book of confucian texts, or any edition of the works of Mencius. There are a great many Taoist, Hindu, and Buddhist works not on that list.