Conten-Type Breakdown: empty vs. unknown

I understand “empty” might be from non-200 responses. What about unknown? My site would provide RPM, DEB, PKG (Mac) packages which don’t show up in the breakdown, though the server does return a content type:

% curl -I
HTTP/2 200
content-type: application/vnd.debian.binary-package

How can I tell the analytics to list those types?

Oh… documentation says analytics were delayed 24h on the free plan. And I only added the content type definitions using Transform Rules less than 24h ago. Maybe in a few hours I’ll see something?