Out of those 3, your horse has some of the better movement although the chestnut could give her a run for her money. Her trot has more flow (less choppy) than the others, and her canter isn't as flat. Her trot also has typical flashy Arabian knee action. Her primary fault in all her gaits she doesn't have a lot of reach and suspension, partially caused by the shortness in her legs. All in all, I'd say she moves pretty well, but nothing spectacular.
"The trouble with the world is that the stupid are certain and the intelligent are full of doubt"