Spirits and Magical Threats Options

[Mulcarn]

Over the course of reading many SR4 and SR5 source books and from playing all 3 SRR PC games from start to finish multiple times, I'm still left with a multitude of questions. I'll start with what I know and from there I'll lead into my various unanswered queries.

There exists at least, or maybe at most, six nearby metaplanes that make up the majority of the standard spirits that metahumanity has the most interactions with. Those being the Metaplanes of Beasts, Man, Earth, Air, Fire and Water. And with those common six, I envision their cosmic distance from us, magically speaking, to be that of nearby planets within our solar system. They are the Inner Planes, more or less. My first question being, since there is a toxic variant of each spirit type, is there a toxic variant for each metaplane type?

Moving onwards a little further, actually, a great deal further. The Outer or Deep Metaplanes are comprised of the Metaplanes of Shadows, Insects and Demons. These metaplanes are home to what we call Wraiths, Shades, Nightmares, Invae, Crawlers, Gum Toads, Ghasts, Vrygoths, Imps and Shedim.

Metaplane of Shadows - Wraiths, Shades and Nightmares (Maybe Blood Spirits?)
The Hive, Metaplane of Insects - The Invae/Insect Spirits and all their types
Desh'Veroi, Metaplane of Demons - Crawlers, Gum Toads, Ghasts, Vrygoths, Imps and Shedim

Out of the above, which one is the closest to us, cosmically speaking? For Shadow and Demon Spirits, are they subject to background count? If so then what kind? Are all magical threats openly hostile with one another? Do Toxics hate Shadows? Do Insects hate Demons? Are they all... friends?