Some people like a lot of white space. Others don't. When it comes to graphic recording, the length of the session and amount of content covered strongly impact the amount of white space on the resulting visual. Graphic recordings done on the same size boards will have more white space for shorter sessions. And less white space for longer sessions.
The graphic recording visual shown above was created during a 45-60 minute session. It was drawn on the same size board as the visual shown in the previous post, at the same event. As you can see, this drawing ended up a lot more dense than the previous one. The writing is also much smaller in this one.
So anytime you hire a graphic recorder for a number of different sessions of different lengths, the amount of white space is bound to vary a bit. But the images will still be unified, thanks to the graphic recorder's overall style carried throughout.