Hi,
There is a 'Comments property: Subject' choosable from the right-clicking on the Commentts List annotation type>Properties>General tab, where one might be able to give more individual Subjects to the same annotation type.

As an example,
yellow Highlighted Text Subject: Note, Follow,
blue Highlighted Text Subject: Refer, Read-it-Later, Look After, Download
orange Highlighted Text Subject: Revision, In-Progress, Important
etc.

It would be so great to make visible (chosen from the Commenting Preferences) the given Subject in an annotation on the Comments List next to the Author and Date. Even more, would be great to allow to Sort and Filter the Comments List by Subject.

The idea behind this feature is to help and give a guide to the annotator and also the reviewer to distinguish the function and meaning of the annotations using fewer colors and oversee more simply (by sorting and filtering) the several annotation subjects.

Many thanks for considering developing this feature in the coming versions.