In modern understanding, Radiant Followers often persecute Life Esoteric Church Followers, so Radiance is considered as corresponding to life, but this is not entirely correct.
In official definitions, the life of the Esoteric Sect is corresponded to the forest of the Orthodox Church, that is, the Druids.
Disaster corresponds to Healing,
Chaos corresponds to Order,
Pain corresponds to Chastity.
And the Celestial Church corresponds to the Astro Church, both Esoteric and Orthodox have established Astro Churches.
Other things correspond to Radiance as well, it's just that the latter, due to its unique doctrine, almost has no information in the secular world, and its Followers are so scarce that they are nearly extinct, making it the most special line among the Seven Great Esoteric Sects. Even in the original setting, it was not officially mentioned, only a few discarded drafts introduced it, and even An Su was unaware of it.