Where are my MainStage files?

After several years of downloading patches, concerts, channel strips and plugins from various sources - I'm now at a loss as to where all of these MS files may be stored if I look for them in the Apple Finder.

Is there a way I can easily 'Find All' - by FILE TYPE - and drag them into their proper Finder Folders? And if so, what Folders should they be in?

I've managed to put them in my iCloud storage, on my different hard drives, ... - anywhere that they may have made sense at that time.

A related question to the above - - does it even matter? In other words does MainStage recognize all such file types across the Mac's hard drive anyway, and thus give me access to them without need to worry about where they're actually stored - whether on my desktop or on some buried User Account folder?

Thanks for any suggestions