Had the idea of using the 3 spots in the stack for “body”, “mind” and “soul”.
So in the category body it is pretty clear, it means whatever changes or serves the body, it is Spartan, Emperor Fitness, Wanted, Paragon, Paragon Sleep…
The category mind would be more related to skill, learning and attitude, would include the Limitless titles, the archetypes (Stark, Emperor, Renaissance Man), True Sell, RICH and all kinds of that stuff. (Titles that make you “better”)
The last category is a little more complicated because the soul title should serve purpose, fulfilling or something like that. Obvious ones are Alchemist, Sage Immortal, Lineage Mandate Eternal, but also not so obvious ones like Chosen, Heartsong, Love Bomb, Healing titles, Godlike Masculinity, Sanguine etc. (Titles that make you “more aligned with yourself”)
Some titles are somewhere in between like Emperor House of Medici which can give you purpose (you serve your family and legacy) and gives you skill/wealth/status.
Be aware that this is just a mind experiment, I don’t have any idea if that concept is helpful or not, never tried it like that.
For example the stack Emperor, Limitless Executive and Ecstasy of Gold seem to not contain all pillars. Maybe it contains the physical aspect in the emperor, the purpose aspect in EoG and the skill aspect is in everything. It is what it is, a theoretical play of thoughts.