Where are the teenage/YA cartoons?

Recently, two cartoons that were slated to be on Cartoon Network, Unicorn: Warriors Eternal and My Adventures With Superman, are now going to be on Adult Swim. To me, this move makes no sense. These shows could have diversified Cartoon Network’s very barebones lineup, but they were shoved to Adult Swim. I sorta understand Unicorn, as it is dark (but definitely not on the same level as Primal, one of Genndy Tartakovsky’s other shows), but My Adventures with Superman? That show seems pretty innocuous. It has a bright color palette and doesn’t seem similar to Harley Quinn or the later seasons of Young Justice. This reminds me of the desperate need there is for teen/YA-oriented western cartoons. In western animation, there are three primary audiences: Preschoolers; anything rated TV-Y, shown on PBS Kids, Nick Jr, Disney Junior, or Cartoonito. Example: Doc McStuffins. Big kids/elementary school crowd; anything rated TV-Y7, can be seen on Nickelodeon, Cartoon...