I think Scrap will prove to be as hard to get agreement on a defenition as variation.
The Titus does seem to have been factory cut, or very neatly cut. The differences made me think it was possibly early production (Or late of course) or maybe a very late stage proof. But those categories require lots of proof and research. Scrap seemed the safest category for a card that doesn't seem to fit the traits of most production cards but shouldn't be called a proof
Then there are ones like this. Everything is correct about it except the cut.
I wouldn't call it a scrap, but it is hand cut and probably came from a sheet brought home by someone.
Steve B