Hi!
Want to first state that I love the attention to detail on the hunched poses. You've put focus on a clear silhouette and the interactions with all of the poses :) Even love the detail in the angle of the one that's reading a book.
What is it that you want to primarily focus on right now?
If you're looking to push the Force on the poses (ex. like the force on the hunched poses) try practicing Poses with a shorter timer (I typically do a few sets of 30 secs and a few sets of 1 minute, then transitioning to 5-10 minutes). As stressful as it is at first, this helps train your eye to grab that center line of each pose and to grasp the motion of the pose while grabbing the basic information of where anatomy is at (location of collar bone, shoulders, head, rib cage, pelvis, legs and feet).
Michael Mattesi has a really good book on this called "FORCE: Dynamic Life Drawing" and he has A BUNCH of videos and past livestreams on his youtube channel that goes over the information in his book
Here's the Channel: https://www.youtube.com/@drawingforce