Bringers of dawn covers them a little but the book is mostly centered around the dark side of them.

Third Millenium also covers the hierarchy of the races and “God’s”..

Think of them like any specific race on this planet.
Not all of any race is bad or good. Each person of that race has a choice they are making every day. It really boils down to the soul steering the body.

Also Third Millenium stresses that it doesn’t matter about who is running this planet and influencing the masses. As worded by pleiadians “the last card dealt in the struggle of dark and light will be light.”