Add application/vnd.microsoft.windows.thumbnail-cache

These files may be used to recover low-resolution copies of images that were accidentally deleted. They can be opened in programs such as Vinetto https://vinetto.sourceforge.net/, Thumbs Viewer https://thumbsviewer.github.io/, or Thumb*.db Viewer https://www.janusware.com/.

https://www.iana.org/assignments/media-types/application/vnd.microsoft.windows.thumbnail-cache