Here is an illustration from PersonalBrain=TheBrain:
The issue I have had with it: To access older items I had to scroll horizontally for each item. Instead, it should unfold as standard vertical scrollable list over the main area.
Related features and feature requests:
In Obsidian, it should be coupled with pop-up page preview on hover over each item. And with Display customizable representation strings/icons instead of filename-only or at least with Use H1 or front-matter title instead of or in addition to filename as display name
For implementation:
It is possible for plugins to display info in status bar as can be seen in some screenshots in https://github.com/lynchjames/obsidian-day-planner
Perhaps it is possible to put there also clickable buttons with file titles.
Combined with graph view:
Other: