For Android devices you can see the list of bundle IDs within the device view. I don't have the same experience with iOS, but perhaps there is a similar column?

As mentioned by Matt, Bundle IDs can be found in the Applications tab of the Device Information Panel.  This is available for iOS as well as Android.  You may have to scroll to the right to see the column named "Package Name / Bundle Identifier".

Alternatively, you can find the bundle identifier when searching for an app within an App Catalog Rule.

Yup! Thank you Matt and Adil! I didn't realize I had to scroll to the right to find it