The Raging Queen has a very similar design to the Curry-type. It may be another of that variant, but with subtle differences due to manufacturing of the vessel - that is, slightly different parts used. It is unclear if this vessel is a Curry-type, or another type designation altogether.
The USSCurry was built by and named for DS9 Visual Effects Supervisor Dan Curry. The studio model was constructed from the saucer section and engineering hull from the AMT/Ertl USSExcelsior model kit, no. 6630, and the warp nacelles and pylons from the USSReliant model kit, no. 8766. Curry noted on the built, "We had to do a fleet of damaged ships. We got together (Gary Hutzel, and other people from Image G) and we kitbashed Star Trek models in ways that they were never meant to be put together. Just for fun each person who built a ship named it after him or her self. The USS Curry is not supposed to be a specific class, just a model I threw together."  After use in the episode, Curry retained ownership of the model. 
Though similar in design, the likewise kitbashed studio model of the Raging Queen differed slightly from the USS Curry on details, as could be discerned on behind-the-scenes fotos of the model.  The saucer section was slightly more positioned forward, additional warp nacelle supporting struts were added and most noticeably, the warp nacelles were mounted perpendicularly on the model as opposed to the Curry model.
The vessel has been given the non-canon designation Shelley-class by fans on the Internet, after the author of Frankenstein, Mary Shelley, a reference to the fact that, like the creature in Shelley's story, ships of the Shelley-class are a gruesome collection of various part that were never meant to fit together.