This is a classic old-fashioned name, made popular by Katherine Hepburn's character Tracy Lord in Philadephia Story. It was the name of Emma Rigg's character when she became Mrs James Bond in On Her Majesty's Secret Service. Classic films, classically popular name.
There are lots of famous and classy/classic Traceys. Tracey Thorn eg.
It has a 'Celtic'/Greek origin (Mediterranean coast possibly) meaning warlike. It's the Thunderbirds family name!
What's not to like?