Question: What criminal organization did James Marcello and Joseph Lombardo work for? 

Context articles: New Orleans crime family
The Greeks (The Wire)
Stanfield Organization
Organized crime
Dark Circle
James Marcello
Joseph Lombardo
Marshall Joseph Caifano
Sixth Family
Nicholas Calabrese

The New Orleans crime family is an American Mafia Crime family based in the city of New Orleans.
 The Crime Family has a history of criminal activity dating back to the late nineteenth century.
 The family reached its height of influence under Carlos Marcello, one of America's most powerful Mafia dons during the mid-twentieth century and at its height had over a hundred members.
 However, a series of setbacks during the 1980s reduced its clout, and law enforcement dismantled most of what remained shortly after Marcello's death in 1993.
 In spite of this, it is believed that some elements of the organization remain active in the Big Easy today.
The Greeks is a criminal organization on the TV series "The Wire", lead by a man known only as The Greek.
 The organization is introduced in Season Two as a mysterious and powerful criminal syndicate.
 Based in Highlandtown in Southeastern Baltimore, a predominantly Greek neighborhood of the city, the organization pay off the I.B.S. dock workers to facilitate the importation and distribution of drugs and illegal goods through the port.
 They are a tangential part of the Major Case Unit's investigation in season two, but the organization's leaders escape capture due to connections to the FBI.
 The Greeks return to Baltimore at the end of Season Four and by Season Five have resumed business with the various other drug organizations in Baltimore.
 Compared to other antagonist groups of later seasons, however, The Greek's organization survives largely intact, due to their extreme caution, business acumen, and avoidance of publicity or any street-level dealings.
On the fictional television drama "The Wire", the Stanfield Organization is a criminal organization led by Marlo Stanfield.
 The Organization is introduced in Season Three of "The Wire" as a growing and significantly violent drug syndicate.
 Marlo has established his organization's power in West Baltimore's main streets in the shadow of the dominating Barksdale Organization, which was more concerned with conducting its activities in the Franklin Terrace Towers.
 The Stanfield Organization violently clashes with the Barksdale crew after the latter is forced to move on from the demolished Franklin Terrace Towers and tries to reclaim the streets the gang once dominated.
 Marlo's is the only crew in the area not to let itself be absorbed into the feared Barksdale gang, and a violent turf war breaks out.
 The Stanfield Organization begins as the underdog, but fallout from the strain of the war combined with a successful investigation by the Major Crimes Unit manages to destroy the Barksdale Organization at the end of Season Three.
 By Season Four, Marlo's crew becomes the most powerful drug organization in West Baltimore, and forms an alliance with the New Day Co-Op while ruling its streets through fear.
 In Season Five, after a period of aggressive expansion which culminates in Marlo seizing control of the Co-Op, a series of arrests and deaths destroy the organization.
Organized crime is a category of transnational, national, or local groupings of highly centralized enterprises run by criminals who intend to engage in illegal activity, most commonly for money and profit.
 Some criminal organizations, such as terrorist groups, are politically motivated.
 Sometimes criminal organizations force people to do business with them, such as when a gang extorts money from shopkeepers for so-called "protection".
 Gangs may become disciplined enough to be considered "organized".
 A criminal organization or gang can also be referred to as a mafia, mob, or crime syndicate; the network, subculture and community of criminals may be referred to as the underworld.
 European sociologists (e.g. Diego Gambetta) define the mafia as a type of organized crime group that specializes in the supply of extra-legal protection and quasi law enforcement.
 Gambetta's classic work on "the Sicilian Mafia" generates an economic study of the mafia, which exerts great influence on studies of "the Russian Mafia", "the Chinese Mafia", "Hong Kong Triads" and "the Japanese Yakuza".
The Dark Circle is a fictional criminal organization in that appears in comic books from DC Comics, primarily part of the Legion of Super-Heroes comic books.
 They first appeared in 1968, created by Jim Shooter as a criminal organization founded by five members and populated by a multitude of clones of the original five members.
James J. Marcello (born December 13, 1943), also known variously as Little Jimmy, Jimmy Light and as Jimmy the Man Marcello, is an imprisoned crime boss who was a front boss for the Chicago Outfit criminal organization in the 1980s, 1990s and early 2000s.
 Organized crime observers identified Marcello as a figurehead during that period while the organization's day-to-day operations actually were run by John “No Nose” DiFronzo, Joseph “Joey the Clown” Lombardo, Joseph “Joe the Builder” Andriacchi and Angelo J. LaPietra.
 Marcello is the Cousin of Michael Hayes Marcello, and a cousin of Robert Urbinatti.
 He is also the father of Rocco Marcello.
Joseph Patrick “Joey the Clown” Lombardo Sr. (born Giuseppe Lombardi; January 1, 1929), also known as "Joe Padula," "Lumbo," and "Lumpy", is an imprisoned American mafioso and a high-ranking member of the Chicago Outfit crime organization.
 He was alleged to be the Consigliere of the Outfit.
John Caifano (born Marcello Giuseppe Caifano) (July 19, 1911 – September 6, 2003) was a Chicago mobster who became a high-ranking member of the Chicago Outfit criminal organization.
 He changed his name to John Marshall when he moved to Las Vegas.
A Sixth Family is an Italian-American or Italian-Canadian crime family or criminal organization that has become powerful or notable enough to rise to a level comparable or close to that of the Five Families of the New York City Italian-American Mafia.
 A criminal organization deemed a "Sixth Family" may rival the Five Families or, alternatively, work closely enough with the Five Families that it appears to be a peer or near coequal of the families.
Nicholas W. Calabrese (born November 30, 1942) is the first made man ever to testify against the Chicago Outfit.
 His testimony and cooperation with federal prosecutors helped result in the 2007 murder convictions of mobsters Joseph Lombardo, James Marcello and his brother, Frank Calabrese Sr.