Greg,
Think you edited list to remove Robbins Reef as you think it's a NJ light. Also, in addition to the list of lights you indicate are still unseen (Galloo Island, New Dorp, North Brother Island,
Old Orchard Shoal, Split Rock Point), I show the following as "unseen":

Blackwell Island Light
Cayuga Inlet Light
Cayuga Inlet Breakwater
Gardiners Island (ruins)
Great Beds Light
King's Point Light
Lido Beach Light
Rondout Creek I (foundation only)
Shinnecock Light
Shoal Point Light
Throg's Neck
Whitestone Point

I also show a light with a list number (34360) at Kingsborough Community College and a light with a list number (19985) at Montauk Yacht Club, but I don't have enough information readily available to determine if either of those lights are "true" lights. The fact that I've listed their Light list numbers and have not indicated that they're faux lights makes me think both of them were active lighthouses and have been moved onto their respective sites.

If my list is correct and the above two are included, there are 19 lights remaining.
Sandy