Hi Jean,
A real good article or several articles.
I seems there are several varieties of Creeping Thyme with different scents, different colors. Some don't have much odor but have beautiful blooms. Some smell good but don't bloom so well and then various combinations.
There may be a "Common Creeping Thyme" though.
I'm still investigating.
Seeds are cheap but plamts around a $ apiece. However you can take cuttings from what you have to make plants.

There's an old Irish-Celtic song called "The Wild Mountain Thyme" or "Will You Go Lassie Go" ,that I love
Thanks Jean
Wy