Thread:Support/Category:Supported projects vs. Special:LanguageStats vs. Project list vs. MainPage/reply (3)

I did some more digging for the source of this number and it goes back to ProjectHandler.php (which in turn relies on MessageGroups::getGroupStructure where I got lost). PHP is not my strong suit so I still can't figure out what is actually being counted (and if only groups with icons are counted?).

Any pointers on this would be appreciated.