When using Jira cards within the Timeline app, there are multiple ways of grouping tickets - eg Status, Assignee, Start Date, etc. There is no way to group tickets by their hierarchy - eg Initiative, Epic, Task, Subtask.
It would be beneficial to be able to do so as this would automatically reflect the ability with Jira’s “Structure” plugin - which is built off both Parent and Link fields.
This combination of fields to produce the hierarchy is important as companies using Jira Basic use the links to work around the limitation of 3 levels of hierarchy at this Jira tier.
The end result is enabling Timeline to reflect groupings similar to Structure so that this view can be presented on a canvas with other relevant project works.
As a stretch goal, displaying Dependency linkages within the Timeline app would also be highly beneficial so as to ensure the correct order of tasks arranged on the Timeline.