I never saw it as “lesser.” Females hated the prettiest girls the most. The more attractive, the more the “group” hated her, and found things to be mad about.
Females seem to bond, over hate of other females. Although, they still gate each other too, they have a common enemy. When the enemy leaves, they turn on each other. If the enemy returns, they reunite.
A lot seems to do with attention. If they feel one girl is getting too much attention, they will unite against her.
Then. It seems to break down to whom they feel physically superior to, for their comfort levels. There is definitely a competitiveness, or jealousy, at play.
Some females, will try to take another female’s mate, only to drop them immediately after the other female is hurt. The intention seems clear. Take her man. Use him. Dump him. And be happy she hurt the other girl.
Or. They must keep the “shit stirred.” Making sure drama is constant…
It’s nature…