Well, I don't know why you have obfuscated the file, or what you have done to achieve that. But I don't need to know.
But if you have ripped a DVD or Blu-ray to an mkv file, perhaps named something like "I Can Only Imagine (2018).mkv", and the [Media Type] = Video and [Media Sub-Type] = Movie, and the movie shows up correctly in Theatre View and you can play it from there, then the file should display in Standard View.
The only reason it would not display in Standard View is the settings in the View itself, either at the "Video" View Group level, or at the "Movies" View level. You could check both those View definitions using the right-click "Customise View" functionality.
The movie showing up in the Image View is strange. If you have given the movie a ".jpg" file extension for your own reasons, that still shouldn't happen, if the [Media Type] = Video. But you will probably break MC by doing that. I just renamed an "*.avi" movie file to "*.jpg" and while the movie showed up in the Movies View in Standard View correctly, it wouldn't play. That is because MC uses file extensions to decide how to play back files, as defined in "Options > File Types".
Basically, use MC the way it is intended and it will work correctly.