Which sect is this temple from? Also, does it accept new westerners? Does it worship Smartism? Does it have a temple for Shiva?

Thank you for asking! The Hindu Temple in Flushing (Queens, New York) does not belong to any sect. The Temple has 5 prime devatas (Hindu gods), including Lord Shiva, and several more devatas. Please see: NYGaneshTemple.org/devatas/ for more info. All are welcome to the Temple. Devotees and followers may choose to worship any or all devatas. Hope this helps! :)

4 questions: It is primarily Tamil nadu Dravidian priests, probably not but maybe, yes and no, Ganesha is the son of Shiva. Ganapati is a baby.