Auto Highlight in Outliner addon for Blender in reaction to a community request streamlines the workflow via robotically increasing the Outliner when an item is chosen in the 3DView.

Amandeep – Auto Highlight in Outliner Blender Features

• Automatic Outliner Expansion: Whenever you choose an object within the three-D view, the addon automatically expands the Outliner to show where that object is located.
• Time-Saving: This characteristic saves you time by eliminating the need to expand the Outliner every time you switch gadgets manually.
• Improved Workflow: It lets you stay organized and focused on your work by constantly showing you the relevant parts of the Outliner.
• Optional Collection Collapse: You can pick to have the addon fall apart all other collections besides the one containing the chosen item, similarly simplifying the Outliner.

Auto Highlight in Outliner Overview

Image: Automatically expand the Outliner to reveal the selected object each time you click on it in the 3D View.