Hi @ETSystems,
you can use the Timeline Availability to display outages. Other than that there is the availability table to present the availability of hosts.
Example:
FYI:
If you really want or need other methods to display data in Checkmk reports you could develop something yourself. Like a little program or script that gets the data from the API or a Livestatus Query. You could then call your program/script via a cronjob and put the diagram output image into /omd/sites/SITENAME/local/share/check_mk/reporting/images. Supported formats: png, jpg, jpeg
Yes this means you have to put in some serious work in but it’s possible and no I don’t have a ready program or script. I just want to show you that it is technically possible. 
Regards
Norm