There are specific visas available to those from a handful of countries (Australia, Canada, Chile, Mexico, and Singapore). The other options are the O-1, E-2, and E-1 visas. One important point is that while the E-2 and the E-1 visas allow founders to get visas to build and run their companies, it also allows citizens of the same nationality as the company to get an E-2 or E-1 visa. The E-2 and E-1 visas aren't available to citizens of every country but they are available to most.