Welcome to the forum!
First, your home movie clips will fall under the “Other” category since they aren’t in the databases that Infuse pulls metadata from.
As to the TV shows, most likely the files are not correctly named for Infuse to be able to search the correct database and pull the artwork and metadata. The users guide here
will give you the formats necessary to have it work. A basic structure such as “Game Of Thrones S01E01.mkv” will usually pull all the artwork and data right away and will be shown in the TV section of the library.
If you’d like to provide a sample or two of how you have your TV shows named we can probably get things ironed out for you.