The "Any I" formation covers all 3 (And there are only 3) I formations in the game.
Strong-I
Weak-I
Regular I
There is no option to select "Regular I" in the DAI, so when you set up your AI, put your Weak-I and Strong-I calls higher than your regular I call. Then, just set your regular I to the Any I option, and the only formation that will trigger it will be the regular I, since the Strong-I and Weak-I will be triggered by the inputs above it.
Side note: The dive play where the HB lines up deeper in the backfield is still just the regular I-Form. It looks different, but it is still the same formation.