Pixiq

Author Jefferey Friedl has placed his Metadata Viewer preset generator online.
In the Metadata Pane, you can select what type on Metadata you want to view using the drop down menu (as per screen shot). Jeff’s tool allows you to create your own.
Follow the instructions in the file on where to place it.

There are warnings on using these files though
“This file is formatted for use with Lightroom Version 1.0. There are no
guarantees that this file nor the instructions herein will be supported by any
other version of Lightroom.

This file itself may be inspected, edited, and redownloaded at:

http://regex.info/Lightroom/Meta/View=j2z

Adobe does not officially support the use of this file; use at your own risk.”

The file listed in one I’ve created and it works in Lightroom Version 1.