With the release of Umbraco 13, our Umbraco packages will align their versions with Umbraco's major version. This means that you can use the version number as a guideline for which version of Umbraco a given release of one of packages supports.
It's however possible that a major version of one of our packages may support multiple major versions of Umbraco. Eg. a version 14 of a package build against Umbraco 14 could in theory also support Umbraco 15 and 16 without any additional changes. When this is the case, we may choose to release a version 14 that supports multiple Umbraco versions instead of releasing individual major versions of our package for each major version of Umbraco.