Use a 2 dimensional array:
struct turnoutData turnArray[2][NUMSERVOS] = {
{
//data from turnArray0 here
},
{
//data from turnArray1 here
}
};
Or maybe a single array of length 32?
Also you can combine the two servo driver objects into an array:
Adafruit_PWMServoDriver pwm[2] = {
Adafruit_PWMServoDriver(0x40),
Adafruit_PWMServoDriver(0x41)
};