Are there any outfit models that work with the outfit loader for the Daz4 models?
Tons! What's important is you get outfits for the models in question! The outfits are made per-model. Some outfits can be shared by multiple models, but only if they're built on the same base body! Examples of this are DOAFantasy and Curvy. Other models, such as say Femshep and Jill, are on unique bodies - only outfits made for them work on them, and outfits that work for them won't work for any other model.