In reading Dust and Shadow I barely noticed how few actual people from the Ripper case the author used, but I'm pretty glad of it. Instead of putting words in Aberline's mouth, the author just uses Lestrade.Any historical figures are generally hearsay, except for a fictionalized scene with Sir Charles Warren that doesn't seem horribly far out of character.
The author makes up a fictional suspect to be the Ripper, which is better than laying it on someone we aren't sure about. And unless you are on the Ripper boards checking on all the real names, you're probably not going to notice that until the end.
It includes this plotline where a journalist keeps writing articles suggesting Sherlock did the murders, which is honestly the most true to the setting idea because there's no way Sherlock Holmes gets away so easily with being such a weird guy without making a few enemies and getting a little mud slung at him. As a result we get this amazing scene where Lestrade has to question him, and another great scene where Mycroft comes by to lecture him.
Really, it's the best I've ever seen in this vein and no one need ever do this plot again.