Welcome!
90% confident this is some variety of Zoysia.
Looks like it has not been cut in a while. Normally looks best when cut lower, like around 2". Is this new sod or is it growing in shade?

Thank you very much.

Front lawn, full sun it has also never been cut.

Best,
Noah

Just my opinion, and it may be worth less than what you are paying for, and it's hard to see your lawn from here (N. Florida). I would guess your turf is Empire Zoysia as it seems to be the most popular in the state. I'd begin mowing it at 2.5" and you may want to keep it there. Many will recommend mowing shorter and they may be right but in my experience Empire is just not the same as other varieties that look their best when cut 1" or less so. It isn't a good idea with any turf to let it grow way high then wack it down to the roots.

Here's more information than you asked for:

Here is a link that might be useful: University of Florida

I still think that the blades are too thin for it to be zoysia. and it is too beautiful and soft to be a weed. any other thoughts?
-Noah