Ian Curtis, Bernard Sumner, Peter Hook and Stephen Morris.
Joy Division's two studio albums were Unknown Pleasures and Closer. Both excellent and both quite different as the Joy Division sound evolved considerably between the two. Unknown Pleasures was stark and minimalist while Closer was more poignant being recorded in the final months of Ian's life. These two albums are essential for anyone new to Joy Division.
Substance complemented Unknown Pleasures and Closer by featuring the best of the non-album studio recordings.
The Preston and Les Bains Douches live albums offer the chance to hear a badly recorded, chaotic gig and a well recorded polished performance in that order. The Re-Fractured box set also includes the first legitimate release of the Amsterdam concert.
Permanent was a "Greatest Hits" type release and Heart & Soul almost offers the "complete works" of Joy Division.
Still was an attempt to sweep up any unreleased tracks along with a live recording of Joy Division's last concert.