I will add my two cents if you like, although Dave did a great explanation above. I feel like Dolphin/Swan is like a Moderate+ or a Deluxe-. Whenever I can get a Disney moderate at the same price or less, I choose that over Swolphin. However, if I can get a good deal, I’d say choose that one 100 times. It’s a great resort with an amazing locations and wonderful amenities and pools. It just doesn’t give me all of the Disney feels as much as an actual Disney hotel.
Just my two cents if you wanted them