What is this plant?
It's difficult to tell at this time of year, but we think this may be a type of Annual Fleabane , a.k.a. Erigeron. The only way to know for sure is to let it bloom in spring. The flowers would be small white or pinkish(1.3mm) ray-like flowers with a yellow center. Pollinators love them.
If in doubt, send us a photo of the flowers when they come and we will look again.
Another person who looked suggested the groundcover Mazuz reptans, which would bloom blue in the spring.