Most we demo'd and reno'd where sized equally and so drywall could go flush back over top, and pulling out a stud from a doorway you could reuse elsewhere to match.

There was only a few where it looked liked somebody had assembled their house from random scraps. Instead of full studs sometimes they were 3 vertical pieces nailed against 2 or 3 other pieces to make a Stud, and the dimensions were all over the map