Also in the Atlanta area, in an area fortunate to be serviced by AT&T Fiber & Comcast's high-speed option. AT&T offers unlimited* data plans on their highest-speed plans, or as an option on other plans:

https://www.att.com/help/internet/usage.html

* - they don't say it on that page, but obviously there is some mechanism by which AT&T would stop you from using the full symmetric 1Gbps constantly.