New York Giants' baseball spring training in Los Angles

The transcript discusses the success of a team in winning many games during the championship season. It highlights Harald Schumacher as a promising young pitcher and Clarence Mitchell as the only left-handed spitball pitcher in organized baseball. John J McGraw is noted for evaluating the prospects of the New York Giants for the 1930-32 seasons.

What type of pitcher is Clarence Mitchell?

What team is referenced in relation to the 1930 thirty-two prospects?