LevelUp1 is the first branch of the Level Up Tree. It's also LevelUp1's usual username!
LevelUp: Behind the Scenes (no link, yet) is self-explanitory. So far, there is no record of it.
Level Up Games is the game company LevelUp1 made, shortly after making his YouTube channel. Before Level Up Games, it was just "LevelUp1 presents", which didn't have a nice ring to it.
Level Up Studios (no link, yet) is the filming branch of the Level Up Tree. Currently, only one instance of the branch exists, in the form of the Project Midnight Trailer.
Level Up Music (no link, yet) is the music branch of the Level Up Tree, obviously. So far, there is no record of it.
Planned, but not confirmed...
(Level Up Games will be updated, but not all the time! Some information might be outdated.)
Level Up Games, since August 2024