Our soul family pattern and our placement within that pattern have a major influence on the qualities we bring to the world.
This is like how devata arrange to create the forms of experience. However, the devata create patterns through their activity, whereas the souls are arrayed in a standing pattern. Feels like this pattern can evolve over long periods of time, though.
The pattern is akin to the templates found on the causal level, the ideal forms. Only this is group dynamics and our role in the whole. Reminds me of how galaxies are arrayed (see image), which also looks like the brain structure.