This is what I call Caitlin Wallace calls the Half Cartwheel Drop. It is also sometimes called Shoefly to Crucifix on vertical apparatus.
Skill prerequisite: You’ll want to feel strong and comfortable holding a hollow body position in dragonfly. It is also useful to have familiarity with some sort of windmill, helicopter, or star drop on a vertical apparatus. It’s not necessarily required but will facilitate understanding of the body position and rotation.