I don't know and I don't care to be honest. (Not about the topic, but about CN's new direction)
I grew up watching Dexter, Johnny Bravo, and all those now-classic cartoons. In my opinion, ever since, CN has been trying to do something remotely similar to all the original and popular yet simple cartoons they had back then. The only good thing they have going on right now is Adventure Time and Pokemon. And Pokemon isn't even theirs. And it's never-ending.
And yeah. Real-people shows are not welcomed there. Leave that to Nick or Disney Channel. That's CN. I have to admit that Unnatural History looked okay. But again, I felt like it belonged in Nick, not CN. CN is more childish, silly, random. Yeah, I know there are silly, random and childish live-actors shows, like iCarly. But, well, the thing about CN is that it's always been about Cartoons. Hence the name.
I think I digress. But you get the point.
Edit: Oh, and I don't remember the other shows you mentioned. Sorry.