What is this particular mounting head type called? All I know is it seems fairly common (I don't know much about photography equipment -- but I need to order some more compatible heads):
The tripod on the left is a Manfrotto Compact Advanced Smart (MKSCOMPACTADV). The cleat on the camera on the right was just hacked together in our machine shop, so while it does fit in the head, it might not visually resemble a more standard-conforming cleat -- sorry about that.
The mount accepts a cleat that is roughly 2-1/8" (55mm) wide and 1-1/2" (37mm) high on the smaller camera side. There are also two small shelfs on either side of the receiving end that look to provide the optional ability to make a cleat that can't be installed upside down. There is a locking lever on the top of the receptacle.
Does this mounting style have a name or other term that I can use when searching for camera mounts to make sure I end up with something compatible?
Note that I'm referring to the interface between the cleat and the tripod, not the three-screw interface between the cleat and the camera. Also I am not concerned about the pan/tilt ability of the whole head, just the shape of that mounting interface.
If it matters, I'm in the United States -- not sure if there's different standards globally.