The Chicago Cubs and the Seattle Mariners share the record with 116 wins in a season (Chicago in 1906 and Seattle in 2001), though Chicago only played 154 games in 1906 while Seattle played 162 (.753 to .716)
Highest overall winning is not really applicable, since not all teams have played the same amount of games (especially since teams like the Red Sox, Cubs, Phillies (holds the MLB record with over 10,000 losses since 1883), Pirates, White Sox, Indians, Yankees, Orioles have been around far longer than other teams)
Miami dolphins have the all time pro highest winning %
Cincinnati reds
chennai
chennai super kings
the colts have the highest winning precentage
65 percent
The New Zealand rugby team, the All Blacks, have an all-time 74.49% winning percentage.
Michigan
florida state
Denver Nuggets
The 49ers have the highest winning percent because they are undefeated in superbowls. P.S. They are 5-0 in superbowls winning against the Bengals,Dolphins,Broncos,Bengals again, and finally the Chargers.
SF 49ers