Keynote is the only app in the iWork suite that has a native visionOS version currently uploaded to the App Store; it joins the TestFlight app.
At this time (still a couple weeks from launch), none of Apple’s other non-in-box apps have native visionOS versions from what I can see.
(EDIT: Playgrounds looks to be available in iPad compatibility mode. GarageBand, Final Cut Pro, Logic, and iMovie do not appear to be available at all)
