Thread:Support/reaching out to ULS extn and VE extn translation messages was bit uneasy ?/reply

What did you search in the group selector? In my experience, that happens because my keyword is too long, e.g. "Visual Ed" will not find VisualEd and vice versa. As for Special:LanguageStats, those are main Wikimedia extensions so you may have to click "expand" a few times to reach the appropriate subgroup.