Ranking the best teams depends on the timeframe. From the “Point System from Nationals finishes” I created, below are the results for various 10 year periods (plus all-time at the end). The first official Men’s National Championship was in 1977.

Here’s a link to the All-Time Top 20 Club Teams on the Ultimate History website showing the details of where each team finished at Nationals each year and how many points each team received:
www.ultimatehistory.com/stats/team-all-time-rankings/

1977-1984 (only 8 years):
1. Condors
2. Glassboro
3. Tunas
4. Windy City
5. Rude Boys

1980-1989:
1. Windy City
2. Tunas
3. NYNY (t)
3. Condors (t)
5. Flying Circus
6. Tsunami (t)
6. Titanic (t)

1985-1994:
1. NYNY
2. Windy City
3. Tsunami (t)
3. Titanic (t)
5. Flying Circus
6. Double Happiness (t)
6. Iguanas (t)

1990-1999:
1. DoG
2. NYNY
3. Sockeye
4. Double Happiness
5. Ring of Fire
6. Condors

1995-2004:
1. DoG
2. Condors
3. Furious George
4. Sockeye
5. Ring of Fire
6. JAM

2000-2009:
1. Furious George
2. Sockeye
3. JAM
4. Condors
5. Johnny Bravo
6. Chain Lightning

2005-2014:
1. Revolver
2. Sockeye
3. Ironside
4. Johnny Bravo
5. Chain Lightning
6. JAM (t)
6. Furious George (t)

1977-2014 (all-time):
(using a team’s best 10 continuous years)
1. DoG (’94-’03)
2. NYNY (’87-’93)
3. Furious George (’98-’07)
4. Sockeye (’01-’10)
5. Condors (’77-’86)
6. Revolver (’06-’14)
7. Windy City (’82-’91) – (t)
7. Condors (’97-’05) – (t)
9. JAM (’00-’09)
10. Ironside (’08-’14)