I wrote "CRJ" because that chart and much of what is written around it looks VERY familiar. But on reflection, I have no idea what that text about pitch rates and stability is about; I've never seen anything like that in CRJ documents. The quoted 'g' limits are so far outside of airliner norms I don't know what to make of them, to be honest. I think you have got some kind of hybrid chart and I'm not sure what to make of it.