Short answers, pulled from the story.
The Southeast Division includes the Atlanta Hawks, the Charlotte Hornets, the Miami Heat, the Orlando Magic and the Washington Wizards. It was formed at the start of the 2004-05 season, when the league expanded from 29 to 30 teams.
The Southeast Division was created at the start of the 2004-05 season, when the NBA expanded from 29 teams to 30 with the addition of the Charlotte Bobcats. The league realigned itself into three divisions in each conference at that time.
The Miami Heat have won the most Southeast Division titles, with 12. The Orlando Magic have won six, the Atlanta Hawks three and the Washington Wizards one.
The Charlotte Bobcats changed their name to the Charlotte Hornets effective with the 2014-15 season. With the change, the franchise assumed the history of the original Hornets, who played in Charlotte from 1988 to 2002 before the name moved with the franchise to New Orleans, where it stayed until 2013 with the team now called the Pelicans.
The Atlanta Hawks ended the streak in 2015, winning the division with a 60-22 record after Miami and Orlando had combined for ten straight division championships from 2004 through 2014.
The Earl Lloyd Trophy has been awarded to the Southeast Division champion since the 2021-22 season. It is named after Hall of Famer Earl Lloyd, who became the first African American to play in an NBA game, debuting for the Washington Capitols on the 31st of October 1950, and it takes the form of a 200 millimeter crystal ball.