Los Angeles Lakers 4.75
Boston Celtics 3.38
San Antonio Spurs 3.02
Chicago Bulls 2.85
Miami Heat 2.43
Golden State Warriors 1.99
Detroit Pistons 1.05
Toronto Raptors 1.00
Houston Rockets 0.93
Oklahoma City Thunder 0.90
Milwaukee Bucks 0.82
Dallas Mavericks 0.67
Denver Nuggets 0.61
Philadelphia 76ers 0.553
Cleveland Cavaliers 0.545
Portland Trail Blazers 0.40
New York Knicks 0.39
Washington Wizards 0.34
Sacramento Kings 0.14
Atlanta Hawks 0.11
----------Finished Top 2----------
Orlando Magic 0.81
Phoenix Suns 0.65
Indiana Pacers 0.61
Brooklyn Nets 0.61
Utah Jazz 0.55
----------Finished Top 4----------
Minnesota Timberwolves 0.61
Memphis Grizzlies 0.25
Los Angeles Clippers 0.14
----------Finished Top 8----------
Charlotte Hornets 0.42
New Orleans Pelicans 0.33
The NBA official history books start with the 1946-47 season of the Basketball Association of America (BAA). These statistics include three seasons of the BAA and 1950-Present for the NBA.
Source: https://www.nba.com/news/history-nba-champions