Every time I have (properly) stalled in the turn, it is the outside wing that dropped due to increased AoA on the outside wing causing it to stall first / deeper.
Level turn? Climbing turn? Descending turn?
One question I often ask students/pilots is "Can I stall if I am diving vertically towards the ground?" (with model a/c in hand pointing vertically down!)
Nope. If you increase (or decrease) the angle of attack then it is no longer diving vertically towards the ground.