CoverArt16x9: This is the 16:9 image that is used by default throughout the TV app at the highest possible resolution available.
CoverArt: For TV shows this is often the old 1:1 square image whilst for movies it tends to be the traditional DVD style cover as previously used by iTunes.
PreviewFrame: This is usually a screen capture from the particular film or TV episode.
CenteredFullScreenBackground / FullScreenBackground - These are used within the TV app for various purposes. They come in all manner of weird and wonderful resolutions and are probably not of much use.
BannerUberImage: These are ultra wide images often used as headers within stores or on the Apple TV.
FullColorContentLogo / SingleColorContentLogo: These are the logos for the film or TV show as transparent PNGs both in a full colour and a single colour (usually white) treatment.
Parallax: Several of the images will have Parallax versions. These are packaged as lsr files and are used on the Apple TV for their fancy parallax UI.
If MetaZ could utilize the Coverart (Both versions), Preview Frame, Centered Full-Screen Background, Full-Screen Background, and the Parallax versions... that would be awesome
Since Apple changed the display size and added a few artwork display types on the Apple TV, I have actually found a site ( https://bendodson.com/projects/apple-tv-movies-artwork-finder/ ) that has:
If MetaZ could utilize the Coverart (Both versions), Preview Frame, Centered Full-Screen Background, Full-Screen Background, and the Parallax versions... that would be awesome