ATG1 Teams

I found this green flier in my 2001 card set called "A Beloved Favorite is Re-invented with New Twists" by Brendan Roberts of the Sporting News. It talks about the inaugural online version of the Strat-O-Matic game. No mention of ATG(1) yet.

Does anybody know how many teams were in ATG1 and then ATG2? I would've thought the 1940 Tigers were in ATG1, but I started in ATG2.

https://www.strat-o-matic.com/product/b ... ector-set/

The 42 Oldtimers teams were basically ATG1? That only goes up until 1967 though. Were the '70s/'80s teams after that? That '90 A's were an ATG2 add?

Here are the 42 Oldtimers teams:

1905 New York Giants
1906 Chicago Cubs
1909 Pittsburgh Pirates
1909 Detroit Tigers
1911 Philadelphia As
1919 Chicago White Sox
1920 Cleveland Indians
1921 New York Yankees
1922 New York Giants
1922 St. Louis Browns
1924 Washington Senators
1927 New York Yankees
1927 Pittsburgh Pirates
1929 Chicago Cubs
1931 Philadelphia As
1933 New York Giants
1934 Detroit Tigers
1934 St. Louis Cardinals
1935 Chicago Cubs
1936 New York Yankees
1940 Cincinatti Reds
1941 New York Yankees
1941 Brooklyn Dodgers
1946 St. Louis Cardinals
1946 Boston Red Sox
1948 Cleveland Indians
1950 New York Yankees
1950 Philadelphia Phillies
1953 Brooklyn Dodgers
1954 New York Giants
1954 Cleveland Indians
1957 Milwaukee Braves
1960 Pittsburgh Pirates
1961 New York Yanees
1961 Cincinnati Reds
1961 Detroit Tigers
1962 San Francisco Giants
1965 Los Angeles Dodgers
1965 Minnesota Twins
1967 St. Louis Cardinals
1967 Boston Red Sox
1962 New York Mets~~~