I’ve been using the Aeon Timeline 3 beta for a few weeks. It is, for me, a good upleveling from the prior versions of Timeline. The integration with Ulysses is good, though I wish there were other integrations (Scrivener, DEVONthink, perhaps).
Check it out.
https://www.aeontimeline.com/2020/12/18/aeon-timeline-version-3-0-is-coming/#!
See also: MPU Aeon Timeline thread