Kāyagatāsati/Kāyānupassanā – Mindfulness Immersed in the Body?

It seems you present ‘right view’ practices/teachings from the entire SA/SN sutras for the notion of ‘dhammanupasana’ in the sati practices in SA/SN.

Note that sati ‘mindfulness’ in SA/SN is mainly for samadha/samadhi; ‘right view’ (or 正觀) in SA/SN is about ‘insight’ (vipassana):