Genshi Continent
Modeled on China, with its own ecosystem. Its guardians are the Saneiketsu, who uphold a law where the strong prevail.
The Eastern Digital World: a continent and small islands floating in the Net Ocean, shaped by data from East Asia. Its host computer, Kunlun, usually sleeps; eight guardians it summoned keep the world in the form a legendary god gave it.
a world of continents and islands, observed only at its center
Official material introduces Shambala as one more world, following the Digital World and Digital World: Iliad. Also called the Eastern Digital World, it is made of a continent and small islands floating in the Net Ocean, and it strongly reflects data from around East Asia in the Real World. Only the area considered the world's center has been observed so far.
Kunlun, its host computer, ranks alongside King Drasil and Homeros, the administrators of the other worlds. It has no fixed form, its symbol resembles a taijitu, and it normally lies dormant: it may intervene only when Shambala falls into a state it can no longer sustain.
Modeled on China, with its own ecosystem. Its guardians are the Saneiketsu, who uphold a law where the strong prevail.
Drawn from Japanese myth, with its own ecosystem. The Sanmyojin guard its heaven, mountains and sea, and the slope of Yomotsuhirasaka leads from here down to Yomi.
A vast mountain area within the eastern continent, said to be home to many evil spirits. The Shikyoju are bound here by talismans and a barrier.
the god of destruction and regeneration who rewrote the world

Legendary
By order of Kunlun, Susanoomon destroyed the system that had existed since ancient times and, with the power of creation, rewrote it into the Shambala of today. The official page presents this as legend: so the legend records.
Susanoomon is not one of the eight guardians. The Tentei Hachibushu, summoned by Kunlun, protect present-day Shambala in its place.
main guardian organization: eight Digimon summoned by Kunlun
Shakamon hears Kunlun's will as the voice of heaven and, as its spokesperson, commands the Eight. Two trios guard the two observed lands, each upholding the creed of its region, and the eighth member keeps the underworld.
All three love war and value martial might: competition, strength and survival of the fittest.
Heaven, the mountains and the sea: the principle that Digimon adapt to diverse environments and evolve.
Enmamon guards Yomi, the underworld beneath Shambala, and appears again in its own section below.
secondary group: the Four Perilous Beasts sealed in Jakeizan
Inauspicious beasts that have existed in the east since ancient times, each named after one of the Four Perils of Chinese mythology. Yellow talismans inscribed with the word Shikyoju, along with data on ancient seals and barriers, bind them to Jakeizan.
Classic Digital World. Four holy beasts guarding the compass points, with Huanglongmon at the center: order, protection and balance.
Shambala. Four ancient perilous beasts held under seal in Jakeizan: ruin, malice and confinement.
regional line-ups, not organizations
A virtual pet version set on Genshi Continent: 31 Digimon drawn from Chinese myth, Journey to the West and similar tales. Its examples include SeitenGokuumon, Erlangmon, Takutoumon, Nezhamon, Dijiangmon and Shakamon.
A virtual pet version set on Ashino Island: 31 Digimon drawn from Japanese myth and yokai. Its examples include Amaterasumon, Kaguyamon, Ryugumon, Enmamon, Ravemon and Zanbamon.
Officially these are the names of two virtual pet versions, each gathering the Digimon of one region's ecosystem. They have no leaders, ranks or mission, so the atlas treats them as thematic classifications.
the underworld of Shambala
The official page calls Yomi an underworld equivalent to the Dark Areas of other worlds. It lies underground, has its own ecosystem and many Digimon that live nowhere else, and even the living can apparently cross into it by Yomotsuhirasaka, the slope that continues from Ashino Island. Both names come from the land of the dead in Japanese mythology.
Digimon of the Eastern Digital World are sent to Yomi after death. Enmamon reads their DigiCores: a core found to carry a bug is confined in Yomi for good and never reborn on the surface. The same system binds Enmamon itself, which cannot ascend to the world above.
who answers to whom, and how firmly each link is established
Names link to DigimonWiki/Fandom (CC BY-SA unless noted otherwise); artwork © Bandai, shown from the official Digimon Reference Book. The atlas is an editorial model built from official material, not a universal chain of command. Susanoomon is DigimonWiki's name for the official Susanomon; official material spells the world both Shambala and Shambhala.