The High Castle should never have seen a 2nd Season. I was quite surprised to realize a 2nd and 3rd.
I watched it because I absolutely loved that whole June Cleaver being a Nazi business. The Main Street in the 50s and the Eisenhower Era technology being congruent with the Third Reich ideals was simply compelling.
It was for me fun in a perverse way.
Yes, I liked the TV miniseries “Fatherland” as well. Counterfactual history is just interesting at all levels, and indeed WW II was a close run thing in so many ways.