Currenlty, there are timelines focused on legal cases, activists campaigns, and news reporting. These timelines are largely used to condense and make accessible larger amounts of data.
However, we have also begun working on more thematic timelines (to document remediation or environmental impact over time, for example) and to make arguments about the role of diverging perspectives. See for example of this timeline of reports about the 2016 marine disaster in Vietnam that uses additional commentary to help distinguish between narratives advanced by activists versus the Vietnamese government.