Thread:Zf6hellion/@comment-24913533-20140605060958/@comment-1493741-20140616130904

They're just Hollows, they don't have a special name for them, just "Hollow".

The hierarchy is Hollow > Gillian > Adjuchas > Vasto Lorde / Arrancar

If you want to give the basic Hollow a unique name/class, I have one in the Básillian (基劣虚 (バシリャン), basirian; Japanese for "Basic Inferior Hollow") which can be found here.