1 - Denyce
2 - LaShawndra
3 - Gordon
4 - Snowflake
5 - Lenny
6 - Chad
7 - Doris
8 - Esther
9 - Kenneth
10 - Jack
All of these are almost unmissable except for Snowflake and Lenny. Head to Yutacan before Katey's zombrex dose or immediately after to fight Ted. Kill him and then feed Snowflake 3 steaks to tame her. This is easier said than done so make sure you have saved before attempting. Then Lenny will be hiding in Yutacan. He will turn on the machines for you then become recruited.