In Florida, it is thought that Pirie (or Pairi, or Paheri) is the same cultivar as the Jamaican ‘Bombay’ Mango. It is definitely different from ‘White Piri’, which was presumably derived from Piri in Hawaii.
White Piri is larger, lacks a beak, and has more of a pastel coloring. It’s also superior to Piri in flavor in my opinion: sweeter/higher brix, more complex. It’s become one of my favorites. The tree is also less vigorous than Piri/Bombay.