A few years ago the Forum member @felixq created a script that scanned your Library List and created a PDF-file catalog of all the footprints. See the thread "Full Footprint Library Lists? ". For us superannuated old guys it sometimes helps to see a group of similar, or related, footprints displayed on a single page where we can visually compare them as we make a selection.
Of course, you will have to run that script against your most recent libraries - there have been radical changes in the KiCAD libraries over the last three years!
Have you laid out PC boards using any other tools before finding KiCAD? You could write a few lines about yourself in your profile. It sometimes helps us create an effective answer if we know a little about the person we’re responding to.
Dale
P.S. - an ambitious young person fluent in Python might create a similar script for the symbol libraries.