496 Raw water cooling?
 

The 496 is a closed cooling system ("anti freeze).

What does the raw lake/sea water drawn by the water pump impeller actually cool?

Am I correct to say that the raw water from the lake cools the following below....
1. The antifreeze coolant cooler
2. The exhaust manifolds
3. Power steering fluid cooler
4. ?????? Anything else

Is there anything else missing in my list?

Raw water cools the fuel cooler, powersteering cooler, engine oil cooler, antifreeze heat exchanger, exhaust manifolds/risers.