If you are looking for the "modded" experiences seen in YouTube videos (like combining characters or new environments), you’ll actually find them in these communities:
Content creators took modding into the realm of the absurd, using custom assets to replace iconic characters: Shrek-Seeks rick and morty virtual rickality mods hot
If you're looking to change the aesthetic or add new elements to the game, these mods have gained significant traction on platforms like YouTube and the Steam Workshop: If you are looking for the "modded" experiences