Here is a comprehensive list of lists. Basically, if there is a particular aspect of FMG stories that you enjoy, you can search for that aspect by category here.
WARNING: Some of these lists will inadvertantly have spoilers within them. If you are someone who wants to avoid spoilers at all costs, then you may not want to look at some of the categories. That said, the stories are usually fairly predictable.
Categories – Types of Gain
Stories with NO/little Height Gain
Stories with Intelligence Gain
Categories – Girl Morality
Stories with Morally Good Girls
Stories with Very Power Hungry Girls (not necessarily evil)
Stories with Morally Evil Girls
Categories – Growth Agent
Categories – Other Themes
Stories with Multiple Growing Girls