The question may be too general as worded. There will be "Christian" lists from the Bob Jones types that are too strict -- and I gather that you've noticed the bias against anything that doesn't jibe with a white nationalist agenda -- as well as lists by others that are too broad.

One question in response is: Is media not supposed to present negative behaviors at all, or is there a standard in addition to "the dog doesn't die" that permits drama on a personal level?

The film "Zathura" (2005) comes to mind. It has a Rotten Tomatoes critics score of 76%. This is a rare non-pablum live-action S.F. film for the age range that you've mentioned. It's interesting enough for this reason alone.

However, the behavior of the older brother in the film towards the younger one couldn't be more toxic. The older brother despises and bullies the younger one and the plot builds to the moment where he (the older one) has the means to erase the younger one from existence and intends to do so.

But the older brother is forced to reflect by a stranger who has the right to judge him; a stranger who erased his own brother in the same manner. The plot device involved is about right to hook younger viewers of the right mindset on genuine #sciencefiction as opposed to Star Wars mysticism. It's a flawed film, but more interesting than "The Land Before Time", which is essentially about plush toys.

"Paperhouse" (1988 version) is a highly rated and much filmed pre-adolescent horror story with a positive enough ending. Its Rotten Tomatoes critics score is 100%. 100% isn't bad. However, it's about mortality and mystery and not plush toys. So, does one go with intense, intriguing, and reflective, or just supportive such as with "Captain Kangaroo" and "Mr. Rogers" ?

Note: If it matters, "Paperhouse" and "Gravity Falls" are the only media mentioned explicitly in this post that have girl protagonists, though "Doraemon" and "BoBoiBoy" do include prominent characters of both genders.

"Iron Giant" (1999 and 96% score) and "Free Willy" (1993 and 71% score) have issues comparable to those of "Zathura". Both are entertaining but are considered by some to be too intense, too political, or too modeling of negative behavior.

There is going to be some such issue with most significant media that isn't pablum. Comment further on the filters that are needed and people should be able to offer useful input.

You mentioned series in particular. One web series for all ages that is often LOL is "Beluga". Boot up "Beluga". Episodes are short and have ridiculous premises. Example: To escape a trap in Minecraft, spawn the deadliest creature in existence, Rick Astley. Thumbs up.

TubiTV presently has -- for free -- a humorous Asian S.F. web series (and one movie) that you may wish to try. This is "BoBoiBoy". The context is a team of multi-ethnic and gender grade school superheroes. This series is colorful and fast moving. I could swear that the villain is voiced by Gilbert Gottfried, though it's probably just a take-off on him.

Of course, Dr. Retro will remember the #Thunderbirds (1960s TV version). The series is also free on TubiTV. It was for all ages and is still watchable today.

I haven't seen "Gravity Falls" and have seen only one episode of "Adventure Time". However, those two series, which should be on streaming, seem promising.

On the "Adventure Time" that I saw, a Root Beer dies heroically saving a city and is forgotten. The Root Beer's wife, a Cherry Soda, remarries. The Root Beer returns from the dead as a Dirt Beer and confronts his wife's new husband. Cherry Soda points out that she's a lawyer and can decide things for herself. Plot lines have evolved since "Rocky & Bullwinkle".

Another option: Why don't you make your own YouTube playlist of age appropriate music videos of the past 60 years and offer that?

Examples: "Mesopotamians" by TMBG (a tribute to 1960s monster toys). "Ride, Captain, Ride" (the video with puppets). "Straya". "Yellow Submarine". "End of the World" (the one with stick figures). "Convoy" (with lyrics). "Tie Me Kangaroo Down, Sport". Perhaps a song from "Free to Be You and Me" (1972). Kids should see more than "Baby Shark".

Anime is right out, in general. However, try the movies, not the TV series, for the Kodomo series "Doraemon". The TV episodes are dull. However, some of the movies rival Disney.

And "Doraemon" makes one realize the extent to which things are dumbed down in the U.S.

The backstory is that a boy living in Star Trek times sends his robot cat back to the 1970s to coerce his lazy ancestor into studying harder and making the family rich. But the cat is also lazy.

In Doraemon, temporal paradoxes are acknowledged. The movies present sobering issues without being heavy handed. And this series is for 6 to 10 year olds. Here in the U.S., we've got "Land Before Time" about plush toys.

We had worthwhile media in the 1960s. The standards are different today, but there are multitudes of options.