Unless they changed it in the last few months, Grandstand is the first bus stop (it does have a pool too with water feature), then Carousel, then Paddock (with pool and slide), then Congress Park (with quiet pool) and last Springs (main pool and slide).
We will be there in two weeks for a long weekend-room only trip. We have stayed at Grandstand (unfortunately it was the last of the GS buildings, so it felt like quite a walk), last October we were at Springs (that first building is SO close to the main pool and a short walk to Paddock pool) and this time we are going for Congress Park so we will be near Disney Springs.