Recap of the current folders the game will check :
name.pregnant,
name,
gender.race.hair.age_category.pregnant,
gender.race.age_category.pregnant,
gender.race.hair.pregnant,
gender.race.pregnant,
gender.race.hair.age_category,
gender.race.age_category,
gender.race.hair,
gender.race,
gender.hair.age_category.pregnant,
gender.age_category.pregnant,
gender.hair.pregnant,
gender.pregnant,
gender.hair.age_category,
gender.age_category,
gender.hair,
gender
Since last time, hair was added, include 'hair' after the hair color.
gender : female, male, transfemale, transmale (only mandatory element, transmale nor present in the game yet)
hair : blackhair, blondehair, pinkhair, etc
age_category : young (18-24), mature (40-59), old (60+), can leave blank for 25-39
race : black, asian, latina, can leave blank for white
pregnant : pregnant, leave blank for non pregnant.
So you could have a subfolder like female.asian.pinkhair.young.pregnant