I'm biased because this is what happened to me personally, but the wierd lack of power combined with high emotional responsibility.
If someone has too little power but also not much responsibility, they're usually spoiled but not mentally unwell. [I.e, a kid who has their parents baby them and do everything for them]
Someone who has too much responsibility but also a lot of power/independence is hurt by not having a childhood but they do still know how to be an adult [i.e, someone with negligent parents who needs to work to provide for them]
What I got was no power [helicopter mom, constantly paranoid about everyone else, basically anything she said went and I could never fight it or argue anything, and if something went wrong it was my fault, never had an independent income until i became an adult, etc.] but also way too much responsibility [Emotionally supporting her, having to be her therapist, having to deal with my emotions myself, having to make sure everything was in tip top shape so she didn't have a mental breakdown and scream at me, having to solve her interpersonal disputes, etc.]. So i wasn't able to be a kid emotionally but also didn't know how to be an adult. Combined with dehabilitating anxiety, suicidal thoughts and actions, and literal ptsd, I think that's my least favorite type.