Batman
Nightwing
Red Robin
Red Hood
Batgirl
Alfred
That's what I would say. And no, I wouldn't include Catwoman in there. She'd be more of her own deal who helps out sometimes. Kinda in the category of Batwing, Talon, and Batwoman.
So, I was just wondering, because I've seen so many members and variations over the past couple of years, according to the New 52, which characters make up the definitive Bat-Family, and shouldn't Selina be included?
Going specifically by what the OP is asking? What JH posted. Pretty much the people the Joker kidnapped and put at the dinner table in Death of the Family. If more people were to be included I would include Commissioner Gordon before Catwoman.