The ones I added - the names don't hash correctly to the Instance.
Spoiler (Highlight to read) c5f6763e:00000000:3782472B0135C5BC ymheadChest_Lift c5f6763e:00000000:B0434455461B26A9 ymheadChest_Droop c5f6763e:00000000:8524093E0D0B3022 yfheadModifier_Ears_AlienPointedBack c5f6763e:00000000:10E5AD6C9F1DCE9C yfheadModifier_Chin_vPointed c5f6763e:00000000:2A04B4C54FF25B98 puheadModifier_Chin_Recede c5f6763e:00000000:845C42C6FB30EDBE puheadModifier_Ears_AlienPointedBack c5f6763e:00000000:A03FACDEC8EBF262 yfheadModifier_Ears_AlienPointedUp c5f6763e:00000000:D7AB51F90718A037 puheadModifier_Brows_Scowling c5f6763e:00000000:E6E08B25846ACBA6 puheadModifier_Ears_AlienPointedUp c5f6763e:00000000:251578660FABFABF puheadModifier_Mouth_None c5f6763e:00000000:470BD6C72FC1231C puheadModifier_Ears_None1 c5f6763e:00000000:6AEEC65D4DDCD6E8 yfheadModifier_Ears_None1 c5f6763e:00000000:99F7A642358856E1 puheadModifier_Ears_None2 c5f6763e:00000000:E4EF0DAF9BF52DD5 yfheadModifier_Ears_None2
c5f6763e:00000000:3782472B0135C5BC ymheadChest_Liftc5f6763e:00000000:B0434455461B26A9 ymheadChest_Droopc5f6763e:00000000:8524093E0D0B3022 yfheadModifier_Ears_AlienPointedBackc5f6763e:00000000:10E5AD6C9F1DCE9C yfheadModifier_Chin_vPointedc5f6763e:00000000:2A04B4C54FF25B98 puheadModifier_Chin_Recedec5f6763e:00000000:845C42C6FB30EDBE puheadModifier_Ears_AlienPointedBackc5f6763e:00000000:A03FACDEC8EBF262 yfheadModifier_Ears_AlienPointedUpc5f6763e:00000000:D7AB51F90718A037 puheadModifier_Brows_Scowlingc5f6763e:00000000:E6E08B25846ACBA6 puheadModifier_Ears_AlienPointedUpc5f6763e:00000000:251578660FABFABF puheadModifier_Mouth_Nonec5f6763e:00000000:470BD6C72FC1231C puheadModifier_Ears_None1c5f6763e:00000000:6AEEC65D4DDCD6E8 yfheadModifier_Ears_None1c5f6763e:00000000:99F7A642358856E1 puheadModifier_Ears_None2c5f6763e:00000000:E4EF0DAF9BF52DD5 yfheadModifier_Ears_None2
For the most part both sexes use the yf modifiers, and children seem to use the same modifiers as adults. Toddler modifier instances can be found by changing 'yf' to 'pu' and hashing the name. At least that's what I've figured out.