Regarding these two points:
- RAW format of the original photos if digital, on CD or memory card
- time stamp on photo
iPhones don't shoot/save in RAW as far as I know. Could these just be the JPGs saved from the phone?
Is a time stamp on the photo printed absolutely necessary?
Time stamp is needed to prove the dates and time the photos were taken. I have seen collision scene photographs without them, but those are easy to prove the date and location by the scene.
Photographs depicting a location with signs, etc have no reference points like a collision.
When all is said and done, it's up the the JP whether they may be admitted. Even if you follow the guidelines.