Deadlifts look nice!. I would like to see some video from the front as well next time to see what the feet and knees are doing right off the floor. You held great position and kept the bar close.
As for the Keystones, they don’t look as “off” as you say they feel. Try to keeps the lats a bit more engaged on the lowering. Also try to really initiate the concentric part of the lift with the feet and glutes,less with the back. You are throwing you chin up/head back, and loosing your brace a bit, putting the movement,off the knee, a bit more into your back. Be very strict with the upper body to the hips so there is little to no movement during the lift , and the lower body is doing the works. Keep up the great job!!