There are 9 types and 27 subtypes. The subtype, also called the instinctual variant, is where the picture goes from "useful" to "actually accurate." Two people of the same type with different subtypes can look like two completely different humans.
Three instincts, one usually loudest
Everyone has three survival instincts running in parallel. One is almost always louder than the other two. The loud one is your subtype.
- Self-Preservation (SP): "is there enough? am I safe? am I sustainable?" — energy lands on resources, body, environment, the long-term cushion.
- Social (SO): "where do I sit in this group? what's my role? am I aligned with the people who matter to me?" — energy lands on the collective, hierarchy, belonging.
- Sexual / One-to-One (SX): "am I really connected to this specific person? is the intensity real?" — energy lands on intimate pairs, charged exchanges, deep individual connection.
“SP zooms to "is it enough." SO zooms to "where do I sit." SX zooms to "is this connection real."”
Subtype changes the type more than people expect
An SX 5 doesn't look much like a textbook 5. They share the engine — preparation, conservation, observation — but the SX 5 will pour everything they've stockpiled into one specific person, while a SP 5 will mostly keep stockpiling. SP 4s look very different from SX 4s. SO 8s look very different from SP 8s. The type stays the same number; the lived shape changes considerably.
“Sometimes the subtype is louder than the main type — an SX 5 looks very unlike a textbook 5.”
Why this matters when reading yourself
If a type description sounds "close but not quite," the subtype is usually what's missing. People often resolve their typing not by changing the number but by adding the instinct. "Oh — I'm not a textbook 6. I'm a SP 6." That sentence makes a lot of previous confusion line up.
Your main type tells you what you fear. Your subtype tells you where your energy spends its first move every time.