Use the Trace 'shutdown' included files checkbox to obtain a report of all the PHP files loaded in the transaction.
There will be hundreds.
Example
C:\apache\htdocs\wordpress\wp-content\plugins\oik-bwtrace\includes\oik-actions.php(97:0) bw_trace_included_files(1) 39 2 2019-12-04T15:46:45+00:00 0.266185 0.010674 cf=shutdown 52 3912 6291456/6291456 256M F=600 included files <h3>Files</h3> index.php wp-blog-header.php wp-load.php wp-config.php wp-settings.php wp-includes/version.php ...
The output is produced as a list of [file] shortcodes.
See bw_trace_included_files()
