How to get a list of local deprecated DataSources

As @djAesthetic alluded to,

Currently this would be handled through the Module Toolbox, using the Support filter and setting it to “Deprecated” will return deprecated modules in the search results. Without any other filters applied, this would return all deprecated modules within a given portal.

I just sandboxed within my own portal and found this filter was working as expected, should anyone run into issues with the filter I’d recommend opening a chat or support ticket with LogicMonitor to investigate further.