Lets say that the fig trees are over 3 years old, which of these fig trees need to be covered in winter
and which ones can stay uncovered? And also which ones of those are just safer to keep in pots inside
your house when winter? We are talking for zone 6b NY Queens

LSU Gold

LSU purple

Celeste

Atreano

Green Greek

Kathleen's Black

Black mission

Saint Anthony

I'm not from a cold climate, but I'm sure you would want to cover them all. After all that work you wouldn't want to lose them to frost.

I grow all of my figs in pots a little further north in zone 5. I leave them out until mid-October to mid-November depending on the weather. I let them get a couple of light frosts outside so they can drop their leaves and go dormant. Once dormant, they should be kept in cold storage. I like to keep mine at about 40 degrees in my barn, lightly watering them about once a month. A cold garage also does the trick. I bring them back out after all danger of frost has passed. Here is a pic of them dormant in cold storage...

Put it all in pots and drag them in your shed or shelter. If in ground plan on protecting your trees. I live in Idaho, I have about 7 in ground, ages 1-4 years all protected heavily branched. This year was the worst winter in my zone, with protection I had minium damage. Without protection it would've been worse. All of my potted trees dragged in my garage with (thrifty store) blanket on top, all lived

Jen

Unless you like taking chances, I would protect them all.  I takes just one bad winter, and your trees could suffer from extensive damages that can wipe away years of healthy, fig-bearing growth.  Then, you will start your figs, again, from the roots up...if  you are lucky.

"Atreano" grows in 7b, so far, without damages. 

Unheated garages, and storage sheds, are cheap insurance against the things that can make a grown man cry.

Frank

Sweet picture Scott

With your climate I'm sure all the work you do makes them even sweeter.

FIGS4LIFE,
  I recognize more than a few of the types you listed as having appeared in some lists that Hermansur put out over the last few months as being hardy/productive/tasty in our area.  If I'm not mistaken, he tends to focus on trees that can be grown outdoors without protection.  Our growing zones are similar.  Try searching the forum for recent posts from him.  In fact, check my "wishlist" in my signature below -- many of them come from Hermansur's recommendations and are therefore cold-hardy in our area.
Jim