I mean in my opinion all the 90's - 00's Nickelodean and Cartoon Network cartoons are better than all that Marvel and DC trash you have listed there but I realise that is probably a controversial opinion with how fervent those fan bases are but shit at least try some like:

Courage the Cowardly Dog

Grimm Adventures of Billy & Mandy

Marvellous Misadventures of Flapjack

Adventure Time

The Wonderful World of Gumball

Regular Show

Cow and Chicken

Angry Beavers

To name just a few, there was a huge thread recently which covers pretty much everything you should check out Here on asklemmy