On top are diamonds, ceramics, a few combo Arks, and a few home brewed strops charged with various abrasives.
In the middle are natural stones from China, Belgium, and Japan.
On the bottom are Arkansas stones, soft, hard, black, and translucent.
Here we see a variety of Japanese and a few U.S. water stones, two loaded Wicked Sharp systems, lapping stones, raw material for strops, and various maintenance items.
I don't use the water stones any more. Natural stones with water just feel more romantic, they are less messy, and they require little maintenance. If the steel is too hard for natural stones, good diamond plates are great for heavy lifting, after which ceramic or even natural stones for polishing. Stropping on diamond-charged leather, or the German red and black compounds. I usually need a nap afterwards.