Thought it was clear I was using "grain" as a blanket term for the affect a tool has on it's output in the same way a analogue cameras film stocks have unique literal grain.
In the sense that the iPhone sensor > internal AI process > Apple Camera app post-processing choices imbue an iPhone Camera Image "grain" to what you shoot.
In the sense that the iPhone sensor > internal AI process > Apple Camera app post-processing choices imbue an iPhone Camera Image "grain" to what you shoot.