Your Camry is not “high mileage” in my opinion. High mileage oil simply has some additives in it that is supposed to swell seals and gaskets to reduce leaks and burning of oil. Valve seals in particular is the target for high mileage oil.
If you are not burning oil between oil changes, or if you have to add oil at the 2000 mile mark between changes your car is fine. If you see a strong puff of blue smoke when you first start the car after sitting overnight that is another symptom of a car with leaking valve guides where a “high mileage” oil might help.
I suspect a regular oil will be fine in your Camry. High Mileage oil is more marketing than any real advantages, and therefore a justification for a higher price. A few pennies of additive for several extra dollars at the cash register.