Everytime I read about these mangoes as king I get frustrated, as the world hasn't tasted Pakistani mangoes, if possible find Sindri or Chaunsa mango from Pakistan from your local market, those are completely next level.
Ymmv.
Edit - maybe I’m biased because Alphonsos are pricier so the palate thinks it’s getting something better much like pricey wine vs cheap wine which are basically the same but are perceived differently.
These are available through most of the Indian subcontinent, albeit sometimes with different names.
I agree that these are much better than Alphonso. Also try Himsagar and Langra!