I always thought that starvation ghosts were ghosts you really couldn't create unless your sim had such a strong single-track mind that they would do one certain task through piercing starvation.
I dunno, I'll wait for someone else to weigh in.
Though you are in Moonlight Falls. There are six different ghost types there if you also take advantage of the playable ones. If you can't create a starvation ghost, I think you'll still be covered for life states.