Positions, orientation and spaced aren't fixed and can vary a lot. To get a bit of the detail involved on it you can check the videos for Musescore 3.6 engraving updates [0] or the "Overhaul" and "Notation" sections for the 4.0 update [1].

Those aren't long, around 5 minutes each.

  0: https://www.youtube.com/watch?v=qLR40BGNy68
  1: https://www.youtube.com/watch?v=Nc08RhOQDR4