I would post this on the Swan & Dolphin thread. There may be pictures of the rooms as well. One thing I know about the Dolphin rooms is that they do not have microwaves, but that's about all I know.
BCV studios have a "Kitchenette". It has: a small undercounter refrigerator, a small sink, a microwave, a toaster, a coffee maker, ceramic mugs and glasses and paper plates etc and plastic silverware.
I don't know about the S/D suites.
The DVC resort studios are like efficiency apartments. As mentioned, they have kitchenette with microwave, sink and small fridge.
The Dolphin premium studios do not have a microwave but they have large living room area with conference table for 4. There may be a wet bar, but I don't know if It's standard. The fridge is the same small mini fridge found in standard guest rooms. It's not a condo like dvc.
A couple of photos and more importantly a layout. As PP pointed out there is a mini fridge but no kitchenette or microwave. It is primarily for people that desire more space or suite like spaces.
Update:
Today I was able to get 2 rooms at the Swan for LESS ($240 night per room) than either the Dolphin sudio OR a BCV or BWV studio. That included everything except the parking fee. Just wanted to say that it's always smart to do the math and check what is available at the Swan and Dolphin as Epcot Resort options.