Here are few examples of thyme varieties. They all have a scent but some are more fragrant than other, and some are just plain gorgeous with their variegates leaves.
Variegated thyme, decorative.
Plain "old" culinary thyme, already blooming in January!
Decorative groundcover thyme, not very fragrant, super tiny leaves.
This is absolutely my favorite, Lemon Thyme, not only it is a super pretty plant with its yellowish hue, but it can be used for its delicate lemony scent. I use it to flavor custards like pannacotta, creme brulée, ice cream bases, you name it. Did I mention that it is my favorite?