Managed Preferences = MCX, so yes, that is MCX you're looking at. Unless you're needing to manage legacy OS X systems, like 10.7, 10.8, etc, you should be using Configuration Profiles.
Technically, Apple declared MCX deprecated as far back as around 10.8, but we still continued to use it all the way up until 10.9. It wasn't 100% reliable under 10.9, but mostly still worked. But when 10.10 came along, that was the final nail in the coffin for MCX, and we needed to switch to Configuration Profiles.
Since Office 2016 requires 10.10 and up to run, you're not going to see anything Office 2016 related in there. There's no point, because the OS required to install and use Office 2016 isn't compatible with straight MCX anymore.
Hope that helps.