I don't have grandchildren so have no idea about children's programmes on secular TV, but I love Superbook and think it's a great way to put over the Bible in a fun way.
Yeah television and kids programming has gotten out of control with it's queer characters and messages. Gone are the days of normal cartoons and kids shows.
I haven't looked into it, but Ben Shapiro's company has a new kids station. He advertises it as good clean wholesome entertainment with no left wing indoctrination.