I respect the pedantry, but I was trying say that I was using the "Anglo" - which in casual speech is short for the casual "Anglo-Saxon", itself short for White Anglo Saxon Protestant.
I remember I had this exact same conversation IRL, and we determined that the confusion and somewhat jargony nature of the latter two terms (especially since WASP isn't well understood outside the US) was why people in casual speech just use the ambiguous "Anglo".
Semantics 🤷♂️