Not sure if this is a bug or an oversight, but I was trying to force a mental break, and found the following:
Eating human meat:
-7 "ate raw food"
-20 "raw cannibalism"
Total: -27
Eating kibble made with human meat:
-12 "ate kibble"
-20 "cooked cannibalism"
Total: -32
Eating human corpse:
-12 "ate corpse"
-20 "raw cannibalism"
Total: -32
Related: These all stack? This means that you can get a total of -71 for eating a human corpse, eating raw human meat, and eating human kibble.
(side note: if anyone's curious, this did NOT trigger a mental break)
It looks like raw cannibalism should be a bit worse than cooked cannibalism. Fixed, thanks.