Blues Dancing: There is Friday Night Blues NYC on Friday nights, Gotham City Blues on Wednesday nights, and the occasional special events. A full calendar of NYC Blues events can be found here: BluesDanceNewYork.com
Fusion Dancing: Melting Pot Fusion Dance on the 3rd Sunday of each month. Find out more about it here: FusionDanceNYC.com/Calendar
Contact Improvisation: There are jams on Mondays, Tuesdays, Wednesdays & Sundays. Most of them are either at Eden’s Expressway or 100 Grand. Check out this blog for details: ContactImprovBlog.com/nyc
Argentine Tango: There is at least 1, and sometimes 2 or 3 milongas every night of the week. Find them here: NewYorkTango.com
Lindy Hop: The big dances are Frim Fram on Thursday nights & live music with dancing at Swing 46 on Tuesday nights. There are lots of special events and workshops. This blog is very well put together to find everything you might want: ThisWeekinSwingNYC There is also a calendar here: yehoodi.com (type in New York as the location)
West Coast Swing: The main dance is Westie Cafe on Wednesdays, but there are several monthly dances on Saturdays. The most comprehensive calendar is here: gothamswingclub.org Other reliable information can be found here: Facebook.com/WCSNYC
Zouk Dancing: An NYC calendar can be found here: ZoukNewYork.com. The big night is Tuesdays at SOLAS, but there is also a dance every Wednesday at Stepping Out and many other monthly & sporadic dances. Reliable information with classes & workshops is posted in this facebook group: Free Zouk New York
Mixed Ballroom Socials: A comprehensive list of Ballroom Socials in both New York & New Jersey (with reviews as well) can be found here: bailamosdance.com Some of the bigger ones are Friday Night Fever every 2nd & 4th Fridays at Stepping Out, Saturday nights at Manhattan Ballroom, every Friday at Manhattan Ballroom Society, and every other Sunday with the Marc Ballroom & Latin Social at Adelante Studios.
Contra Dance & Traditional Waltz: Calendar for the whole state of New York is here: contradancelinks.com Contra Dance New York usually has dances every other Saturday: cdny.org Brooklyn Contra has them twice a month on Fridays: brooklyncontra.org
Salsa Dancing: There can be up to 4 Salsa events a night in the 5 boroughs. Check out this calendar for all the info: SalsaNewYork.com
Kizomba & Semba Dancing: There is a meet-up group for Kizomba here. You can check out the events on this page: kizombanyc.com. And if all else fails, you can reach out to the contact person on this Ambassadors page: kizombacommunity.com