Stateful sets (and other workloads like Daemonsets) should now be visible in Dive. Note that this requires a dive-agent of 0.0.8 or later (current version is 0.0.9) -- you can see what version you're running in the page of Dive.

We also have some UI work coming soon to clarify the type of each workload. Please take this feature for a spin and let us know how it goes.