Just for the sake of a random thought, I’d like to submit to you two conceptions of a god of chaos. And it’s to do with individual deities and not God
The embodiment of Chaos
A god who embodies the primal forces and energy of Chaos, and the things associated with. It could also be a deity who embodies the ideology of Chaos, which I have mentioned in two previous posts. Also a god with the power of Chaos.
A god who creates a world but does not rule it
Try to imagine it: a deity who creates a world, but does not necessarily rule over or control his creations. He does what he feels like within his own creation, and his creations essentially do what they want.