The people at the Jewish Daily Forward have given considerable effort into creating a guide to Holocaust literacy.
Reading literature without knowing history is impossible. One cannot appreciate the literature of the Holocaust without a grounding in its history. But conversely, one cannot understand the Holocaust without the insight of witnesses and great artistic or literary figures. This list, with a number of your comments included, is a distillation of a body of work that you have told us about and which is expanding every year.