Hall of Fame Done
Well that was an adventure.
I've won if there aren't any gamertags with over 231,930 gamerscore achieved who aren't on Trueachievements - each person can only win one category. Phnar wins for number of achievements, which is prioritized higher than gamerscore if the same person wins two categories. Which leaves me for the United States gamerscore earned winner.
Will be looking out for a message from Microsoft, fingers crossed.
UPDATE: I won! Am an official Xbox Hall of Fame member. Xbox sent me a series X, a trophy, and a hoodie.