The cameraman should have given you a complete copy of the entire CF card from the camera, which also has a lot of important data as well as the mxf video file.
This probably what all those other files you are seeing are. You do not need to sort through all these files selecting only the mxf video files.
If you download the Canon XF Utility and use Log and Transfer in FCP it will only show you the video files and you can select which shots or portions of shots you require and the type of ProRes you want to convert the mxf versions to.
You should always keep a full copy of the original CF card (preferably 2). If your ProRes versions are lost or damaged you will be able to re-capture ProRes from these CF card copies directly into your project.
Canon XF Utility will backup CF cards correctly and very quickly.
Do not use the camera as a capture device.
Shane’s tapeless workflow tutorial covers the complete process.
Cinematographer, Steadicam Operator, Final Cut Pro Post Production.