Who are the symbolic 'ministers' and 'bards' serving the Guru-King in the magnificent assembly described in Chapter 16?

In the grand, metaphorical court of the Guru-King depicted in Chapter 16, the bards who sing his praises are the four Vedas, the six Shastras, and the eighteen Puranas, representing the entirety of sacred scripture. The assembly is further served by eight specific 'ministers' who are personified spiritual qualities and practices. As listed in Chapter 16, these eight ministers engaged in His service are Detachment, Devotion, Pure Knowledge, Hearing (Shravan), Reflection (Manan), Meditation (Nididhyasan), Self-investigation, and Realization. This imagery highlights that the Guru's kingdom is one of pure consciousness and spiritual discipline.