Funny how in the diagram, the "swinging drawbar" gets a additional descriptive adjective ("swinging"), whereas I would just call that the' drawbar (no adjective required).
IMHO, what they just call the "drawbar", I think should get the added description (a "cross drawbar") to set it apart from the tractor's (swinging) drawbar.
:2cents:
Per your photo, your drawbar doesn't swing, so it is just a drawbar although it does appear to be adjustable forward and back (in and out).