The Three Pure Ones and the Eight Immortals sit inside both this entry and the separate Chinese pantheon page, and that overlap is not a duplication to be resolved but an honest description of how Chinese religious life actually works. Chinese religious practice has never sorted its worshippers into exclusive denominations the way the Abrahamic traditions do; a single household might keep a kitchen god shrine drawn from folk religion, venerate the Eight Immortals as Taoist exemplars of self-cultivation, and hold ancestral rites with no sense of contradiction, because the boundary between organised Taoism and the wider folk religious world was never sharply drawn to begin with.
What distinguishes this entry from the Chinese pantheon page is not a different roster but a different frame. The Chinese pantheon page describes a celestial bureaucracy headed by the Jade Emperor, gods holding office, receiving reports, and being promoted or dismissed, the administrative model that shapes Chinese folk religion broadly. This entry describes the same core figures through Taoism's own theological self-understanding instead, as emanations of the Dao and as exemplars of a specific path of self-cultivation toward transcendence, the reading Fabrizio Pregadio's Encyclopedia of Taoism gives them and the reading Taoism's own textual tradition, the Daozang, actually supports.