Centipede grass.

I was going to go with a third option, St Augustine, until I saw the seed heads after 2 weeks. St Aug and centipede have similar seed heads, but St Augustine can go unmowed for months and you'll never see a seed head. If you have seed heads all the time, then it can't be St Aug. So, centipede.

Just a tip: the best pictures of a garden are taken in the shade or on a cloudy day. Look at your own. The ones taken in full sun have very bright yellow/green as well as very dark shadows. Those taken in the shade have various shades of green with no bright brights and no black blacks.