Just my ideas for how the population might split
Nomads: Comprised of scientist and researchers from every field, many engineers, adventurous military personnel and civilians (all trained for respective duties).
(12.6% of humanity)
Empirists: Comprised of military leaders, political leaders, less optimistic masses, and criminals to be put to use.
(43.48% of humanity)
Immolators: Comprised of many mentally ill, a few hardcore death metal fans, etc.
(.01% of humanity)
Colonists: Comprised of optimistic masses, a few spiritual groups, a few smaller political leaders, and a fair amount of military veterans.
(21.87% of humanity)
Solists: Comprised of spiritual, hopeful and optimistic civilians, a small amount of scientists and other professions.
(22.04% of humanity)