I’m Australian, and here, for me anyway, we hardly ever see the ‘Sorcerer’s Stone’. My movie set, my book copy collection, any streaming site (such as Amazon Prime or Paramount+, because that’s what my family has), says ‘Philosopher’s Stone’.
I’ll be honest, when I first got into Harry Potter series, I got so confused seeing both ‘Sorcerer’s Stone’ and ‘Philosopher’s Stone’, but I worked it out eventually.
It was mainly because my ex-best friend always said ‘Sorcerer’s Stone’, whilst I used ‘Philosopher’s Stone’.