See item 8. In classical socionics, subtypes don't exist.
Subtypes are actually a theory which is trying to differentiate persons which would have the same TIM.
Classical socionics is an intellectual typology (i.e. typology of priorities of perception). Some theorists like Gulenko made it a more physiological typology, but Gulenko's socionics is a separate school, Humanitarian Socionics. Gulenko and Augusta do not have the same model. Really, each socionist has his own model. Socionics is an individualistic science.