What does the camera information in Apple Photos on macOS mean?

The camera information in Apple Photos in macOS is different than what it is on iOS, and doesn't seem to correspond to anything. For example, for an photo where I have > Telephoto Camera — 77 mm f2.8 on iOS, I get > back triple camera 9mm f/2.8 on macOS. The former makes perfect sense, but I don't recognize the latter. I get this discrepancy regardless of the camera (my current iPhone, my previous iPhone, others' iPhones) used to take the photo. What does the macOS information mean? Why is it different from what's displayed on iOS.