I should have said more but you found out on your own. Pretty much any hop that has a registered trademark is not available. These include:
Citra, Palisades, Simcoe, Warrior, Amarillo, Summit, Bravo, Apollo, Super Galena, Ahtanum, Saphire, and probably more.
Columbus/Tomahawk/Zeus can be found on the market now. These are called CTZ sometimes, because DNZ testing has proved them to be the same. So they were found to not be proprietary, and I think that is how they found their way to the general market, as there was no competitive advantage to keeping them under wraps.
My guess, based on you being in NY, is that the hops will do well in this order Cascade>Nugget>Mt. Hood>Perle.
American hops tend to do much better than European where I live. Centenial, Chinook, and Magnum might do well for you.