I've been wondering about the lamppost.

[ she looks at it again and reads the words on the schematic. ]

Everyone on that list was a culprit except Zangetsu, Shiro and Lysithea. Shiro also isn't dead like the rest of them are. Furthermore, it's mentioned here that a couple of people had underperformed.

[ she turns to look at lucrezia. ] I don't suppose you'd be willing to tell us the names of those who underperformed, would you?