Type XXI

A Type XXI civilization exists beyond the highest planes outside reality and non-reality.

They are the Gatekeepers of the Beyond. They are the Beyonders.

Type XX Beyonders are the soldiers that guard the Gate which is the entrance to the Citadel at the edge of Beyond. They live in the Citadel which protects the Pyramid. Type XXI citizens live in the lowest level or tier of the Pyramid. This may be in another realm, or the entire Pyramid may be within one realm; this is unknown and unknowable and is therefore a concept.

Concepts
The Pyramid is composed of multiple levels.

Type XXI citizens are the commoners. By any other standard their lifestyle would be godly, and beyond the wildest imagination of lower level beings. Yet, they likely yearn for something more... something with a higher calling. They are protected by Type XX soldiers and have no fear of disruption by outside forces, nor of higher powers.