Thanks, Vic.
One other garden/tall phlox, with variegated leaves, that I've seen for sale here over the last three years: 'Goldmine Improved': this was the third year in our garden. Left side. Sorry picture's not so great.
The variegation is yellow-green, more than white-green. I do prefer the magenta-pink flower colour: Have sometimes felt that the flower colour in Nora Leigh is a bit anemic/washed out.