yep, pic 4 shows the difference, you get your hands more under the shaft, rather than the club rolling well behind you as in the first pics - certainly on a better track here
A touch more forward tilt at address, and thinking more, left shoulder "under" the chin (backswing) right shoulder under the chin (through swing) should help you keep that spine angle better, and get rid of the slight lift/separation of the arms in this series
think of Fuzzy's swing for an extreme example, or see the pics of Jodie Mudd - slightly lower hands/more tilt, same motion - will put you right on track time after time with the move you have