Macmike. We are in a zone 5 in Connecticut, and have ground figs here, are, Marseilles Black VS, Danny's Delight, Hardy Chicago, Sal's EL, Hardy Hartford seem to be cold hardy here. We have been burying them for winter protection. But some are as tall as 8 to 10 feet
For our area of Connecticut, Sal's EL, is the gold standard for cold hardiness, in zone 5. It has been winter tested in our area since around 1990. The original tester ended his testing by keeping out of his collection, only Sal's EL.
The next most cold hardy fig would be the English Brown Turkeys. But, more difficult to locate, and you may have to try several to find one that will ripen all it's main crop figs before frost. But, they are reputed to be able to take temperatures of minus 18 degrees Fahrenheit, through zone 5 without winter protection, and zone 4A with winter protection.
Hope that helps.
Bob