Mostly I do all 3 sets. If it is unilateral then 2 sets each side.
Lower
Heel Elevated Squats/Squats – 3 sets – reps vary based on the weight
RDL/B Stance RDL – 3 sets x 8 - 12
Split squat/lunge variation - 2 sets – 10 - 12
Leg extensions – 1 set until failure
Leg curls – 2 sets
Calf Raises...