IMO all dark magic is Outsider magic. I think Jim even suggested it but didn't want to be too specific. I think that's why it results in corruption, and madness.
If the DF is based on a d&d scheme where we don't know all the rules, I could totally see it just being the same bad juju based on different layers or sources. Like magic is magic as far as the 5 elements go, but water magic is decidedly just as different from fire magic as it is the same.
The 3rd example always seems to remind me of a strong enough being simply trying to dictate reality. like if MW comes to earth reality warps around her. Or how mab's mere presence makes snow. They seem to be trying to juice up that effect but lack the ability to take it beyond mere willpower.
