My background with open/free licensing is only within FOSS. An example of category differences within FOSS is Copyleft/Permissive. There is a variety of licenses even within these categories. GPL, MIT License, and Apache License are the first that come to mind.
These questions are great when it comes to Creative Commons Licensing:
However, I don't want to assume that Creative Commons is the only option when it comes to licensing Open Data.
Are there multiple categories of Open Data licensing, and how do they differ?