These models are explicitly creatures, rather than mounts, and the lack of saddles or other accoutrements implies that they are probably standalone, though that does not necessarily mean the models may not end up being used elsewhere as well.
New Dwarf Gryphon Creature Models Datamined in Patch 12.0.7
Further datamining of the Patch 12.0.7 PTR servers has revealed four new Dwarf Gryphon creature models!
