Furthermore, this term implies no power imbalance. So if there is no noticeable power imbalance in the relationship or even if the Little takes the dominant role, this term is also chosen.
CGL stands for Caregiver/Little Regressor. Little Regressor is a variation of the word Age Regression. Regardless of whether it is really an age regression from a medical point of view, this is to express that it is not a kink. The Little falls into innocent, childlike feelings. BDSM, power imbalance, punishments, sex and all that are completely taboo.