Rishi: Traditionally associated with Puruṣa/Nārāyaṇa-cosmology; in Vājasaneyin transmission often treated as anonymous/ādi-mantra complex rather than a single ṛṣi attribution.
Devata: Viśvakarman; Tvaṣṭṛ (as formal shaper); implicitly Prajāpati as the sacrificial totality.
Chandas: Triṣṭubh (dominant cadence; mixed/irregular in some recensional analyses).