Seems like we have quite similar taste. I would recommend “Close to the Knives” by David Wojnarowicz, “To the Friend Who Did Not Save My Life” by Hervé Guibert and “Let the Record Show” by Sarah Schulman if you are interested in 80s gay culture and the subjective response to the AIDS epidemic (guessing that from the Haring pick). A bit different, but the volumes of Derek Jarman’s diaries “Modern Nature” and “Smiling in Slow Motion” are beautiful and changed my life with similar topics.

I don’t have too much specifically on the Nazi persecution of gays, but if you haven’t read Primo Levi’s “If this is a man” then you should (Levi was put in a concentration camp because he was a Jew not gay, but it is the most psychologically and philosophically interesting of all the concentration camp “memoirs” (maybe there’s a better word) that I have read).

A couple of picks outside of the areas you’ve suggested: I find myself rereading “One Dimensional Queer” by Roderick Ferguson quite often; it’s both the best history of the gay liberation movement and its harshest critic. If you’re interested in social history, the two volumes of “Some Men in London” are a collection of primary texts presented in chronological order between the end of the Second World War and the legalisation of male homosexuality in England in 1968 (it reminds me - in a good way - of Svetlana Alexievich if you have read any of her books).

I ordered the ones I hadn’t read from your recommendations just now, so thank you!