In the section of observing the mind (cittānupassanā) (DN ii 299: [SuttaCentral], there are 16 types of mind such as mind with greed, mind without greed, mind with hate and mind without hate. Some types of mind such as mind immersed in meditation (samāhita-citta) and liberated mind (vimutti-citta) seem like they can occur not only in worldly ones but also in the noble ones. In other words, some of these kinds of mind seem including supramundane mind (lokuttara-citta). But commentaries and sub-commentaries mentions all these types of mind to the only mundane mind (lokiya-citta) and they exclude the supramundane mind.
My questions are here:
Why do they not include the supramundane mind?
Can supramundane mind not be the object of insight meditation for the noble ones?