Hard for me to judge your bubble-ness, as I'm in a different bubble of ....I dunno, a recovered former Wehraboo? Those people who "study WW2" mostly to edge themselves about how militarily successful the Nazis were. I include a large part of the US military officer corps in this category, where quoting dead German generals is normalized. I had a copy of "The Cruel Hunters"[1] before I left high school back in 2001, so of course I know what a totenkopf is, and it's shocking to me that most people don't.
EDIT: And if I had to pick a Nazi symbol I think most people don't recognize, I'd go with the Black Sun.[2]
EDIT: And if I had to pick a Nazi symbol I think most people don't recognize, I'd go with the Black Sun.[2]
[1] https://www.amazon.com/Cruel-Hunters-SS-Sonderkommando-Dirle...
[2] https://en.wikipedia.org/wiki/Black_Sun_(symbol)