Jungle Book Shounen Mowgli

Spacetoon (Arabic: سبيستون‎ or سبيس تون) is a pan–Arab free–to–air television channel that specializes in animation and children programs mainly from Japan. It began broadcasting on 15 March 2000 and it is headquartered in Dubai, UAE with offices in Riyadh. The channel targets children from 4 and up and is for the family. Its late night block Space Power is targeted at teenagers and young adults.

Spacetoon is closely affiliated with Syria-based dubbing company Venus Centre. Spacetoon is broadcast in 30 countries, and has an audience of over 500 million viewers, witch make it one the main channel to distribute anime in the MENA region.
Source: https://spacetoon.fandom.com/wiki/Spacetoon_Arabic
https://en.wikipedia.org/wiki/List_of_programs_broadcast_by_Spacetoon

this list is not complete, I only added series that are more remembered.

These classic Nippon Animation series were usually adaptations of well-known literature by non-Japanese authors. Many ran for exactly one year as part of the well-known family-friendly program "World Masterpiece Theater".

Anime series that aired on a Polish TV channel Polonia1 around 1994

This is not include animes that has inspired by classic lit or mentions it, mainly this is on anime that adapts or loosely adapts on classic lit. (Note: I'll try and update as much as I can and add some obscure ones!)

animes where there are appearances of primates; monkeys, gorillas, etc..

Anime that were part of every middle eastern child growing up in the 80's and 90's
suggestions are appreciated

Adaptations, sequels, prequels and spin-offs of western films, TV shows and literature in anime format

More anime that are based off of/inspired by literature/books :)

(70s): https://myanimelist.net/stacks/13206

Series which most Finnish people watched in their childhood.

Anime (not just the obvious ones) that contain animals either as the protagonist or in a relationship with humans etc.

Once upon a time, before KPI and censorship strikes, these are the list of anime that ever aired on Indonesian TV.

I'm compiling the list from all around the Internet and some from collective memory.
If you remembered anything wrong or missing from this stack, please message me.
Sequels are not listed here.

Since only 50 can be listed as a stack, this will be separated into several part.
Part 1: https://myanimelist.net/stacks/35256
Part 2: https://myanimelist.net/stacks/35344
Part 3: https://myanimelist.net/stacks/35464
Part 4: https://myanimelist.net/stacks/35767
Part 5: https://myanimelist.net/stacks/35768
Part 6: https://myanimelist.net/stacks/35779

This list only includes anime aired on Spacetoon.

*Work in progress.
**Data from TVRI is very scarce, if you have more info about anime that ever aired especially in the 1980's, please message me.

Collection of series featuring a male main character and a companion creature.

Boy and Creature: https://myanimelist.net/stacks/37389
Girl and Creature: https://myanimelist.net/stacks/28373

The following list is more assumption than actual knowledge, since I don't have access to the books, etc.
If I am wrong with one of them, please DM me so I can fix it.

Pluto TV es un servicio de streaming gratuito (con anuncios), que si bien su principal enfoque no son las series on-demand, tiene un catálogo decente de anime clásico (especialmente para un servicio gratuito).

Pluto TV is a free (ad-supported) streaming service which, despite its main focus aren't on-demand series, it has a decent catalog of classic anime (especially for a free service).

Nota: Towa no Quon está listado como serie en vez de película en el servicio.
Note: Towa no Quon is listed as series instead of movie in the service.

También hice un stack con ViX
I also made a stack with ViX
https://myanimelist.net/stacks/41418/

A list of anime that are adaptions of children's books (all around the globe). Recommended for reasons of nostalgia and as Iyashikei-anime before Iyashikei was a thing.