I remember being brand new in my career attending meetings with sales associates, I would write their names down where they were seating until I learned them all. It was a neat little trick.
The photos of the reporters had circled numbers next to them, to detail the order in which they should be called, with a matching answer somewhere amidst the papers to the questions they were going to ask. At one point, a reporter asked a gun control question and Joe started talking about infrastructure. Oops.
I would hope that a POTUS, newly elected or not, would be operating on a little higher level than that.
Biden has been in DC for nearly 50 years, so he should know most of these reporters by now.