Oh yes, Transformers Animated is a gem among the others TF shows and Steven Universe is surely more than meets the eyes.... for a shameless plagio.
A quality cartoon series about inorganic, long-lived, humanoid aliens who learn to call Earth home as they protect humanity from others of their own kind and act as parental mentors to a half-human, half-alien child who is learning to wield their powers:
Over the Garden Wall by Patrick McHale.
So apparently back in 2014 there was a really good miniseries that aired on Cartoon Network. It's creepy, charming, clever, and deep.
This miniseries is a thing of beauty - a thing to treasure.
Tremendous tale! Beautiful!
1.) The Iron Giant
2.) Miyazaki movies (of course)
3.) The heartbreaking The Red Turtle
4.) Cartoon Saloon films
5.) Adventure Time (amazing)
6.) Gravity Falls (also amazing...)
7.) Avatar: The Last Airbender
8.) The Legend of Korra
9.) Batman: The Animated Series
10.) Gargoyles
11.) The Spectacular Spider-Man
12.) X-Men: Evolution
13.) Over the Garden Wall