This is a great article that may answer a lot of your questions.

https://phigblog.com/2009/10/16/fresh-figs-for-cold-climes/

Hardy Chicago is one. But when they are young you will have to protect them in winter.

No variety is going to survive zone 6 winters above ground unless they are in a warm microclimate, which usually means they will not get much sun or protected which becomes a true challenge after a couple years.

Varieties like Hardy Chicago, usually called Etna figs, are more cold hardy than most but just barely and will be vulnerable to even light freezes if they grow late into the season, whether from juvenile growth, or excessive rain/fertilizer. They are most reliable in cold zones because they areable to produce figs after freezing to the ground.