Nitpick: "0f1012 vs 272928" doesn't actually mean anything. Any two shades of black or any color could result in these numbers depending on how the camera exposure is set and how the raw->jpeg conversion is done.
Then I remembered that a friend told me just today that cameras have gotten so smart about color correction that they may automatically correct an unusual scene (like a sky illuminated weirdly by wildfire smoke) to something more familiar and expected.
So, maybe if a current smart camera thought that one of the objects was a specific kind of thing that "shouldn't" be a particular color, it could just totally replace the color with one it thought was more plausible!
Even if they are not really well defined, cf from op :
> Compared it my blackest matte black paint (left), black paper, black 4.0 (middle) and sharpie (right)