Your citation there shows von Braun being a total shitstain, but not necessarily a racist shitstain. He lacked morals and principles, and used slave labour; but it doesn’t seem like he cared much about who the slaves were. So he doesn’t seem to have ended up having any qualms about hiring black people. I suppose it makes him slightly more progressive, but not necessarily any less of a bad person.

Regarding Shpakovskii, it’s unclear what he was accused or convicted of, and it’s unclear if whatever the allegations were were also true. But given the example provided, it seems the worst thing he could be getting accused of there is stealing from partisans/Jewish people, which is bad but not a war crime (assuming his case is indeed ‘similar’ to the example provided in that text).

I’m not sure we can figure out what this guy did exactly with just online sources, I can’t exactly find much more on the man. Given the evidence, he could in theory have been a Chetnik, which would fit his motivations and background. Being a full-blown Nazi seems less likely. That doesn’t mean he wasn’t involved in any war crimes, but there’s currently nothing that suggests that he was.