Please Recommend Pure Land / Other Power Buddhism Books
I'm not sure if you would like some academic literature but here goes:

T’an-luan’s Theory of Two Kinds of Dharma-body as Found in Shinran’s Wago Writings has a detailed description and great diagrams on this topic.

The Dawn of Chinese Pure Land Buddhist Doctrine: Ching-ying Hui-yuan's Commentary on the Visualization Sutra