In Windows Compliance by Computer report, there is an option to select 'Distribution Status'. On selecting 'Downloaded', it returns only the downloaded Software Updates. This option is not present in Red Hat, SUSE and CentOS Compliance by Computer report.
This is working as designed.
Download view for Red Hat, SUSE and CentOS Software Updates is not available in Compliance by Computer report.
Feature to view the 'Downloaded' updates for Red Hat, SUSE and CentOS is not available in Compliance by Computer Report as per product design.