Most of them would be dead, Generalplan Ost called for it after all. Anyone ajudged "Aryan" by the occupiers would probably have been counted as German by those who survived and likely killed or at least punished after the war, but those who collaberated for their lives were likely killed by the Nazi's once their usefullness was felt to be at an end...
Primo Levi, an Italian Holocaust survivor, said something like this about Chaim Rumkowski, the leader of the Lodz Ghetto: his actions were not remotely moral, but you have to consider the unimaginably terrible circumstances Nazism creates, and how it is hard to be good person when an enemy is so dedicated to destroy you.
The actions of Rumkowski and others are just a testament to how..inhuman an ideology Nazism was. In a normal dictatorial regime, collaboration can ensure a decent chance at survival. The Nazis were so awful, that not even collaboration could save you in the end.
A good story set in the AANW universe would be one starring a Nazi collaborator from Eastern Europe who survived the war and escaped justice but suffers from guilt/PTSD due to all the horrors he witnessed and perpetrated out of self preservation.
A good example of this would be J. Bruce Ismay, the White Star Line director. His life after the Titanic disaster could well be described as a "living death". He was hated by the public for leaving the ship, blamed for the disaster, and his career forever tarnished. He lived the rest of his life as a miserable introvert. His own granddaughter felt it would been wiser for him to die rather to than live a life of shame.
Someone who worked for the Reich out of survival might feel the same way.