Home videos no longer appear on Apple TV

What is your model Apple TV? Identify your Apple TV model - Apple Support

Home videos would appear in the Computers app on Apple TV, if Home Sharing is activated on both devices.

Use Home Sharing to share media from a computer to other devices - Apple Support

What happens when you open the Computers app? Does it connect to the library on the networked computer? Depending on version OS of the Apple TV and version OS of the computer, the Home Videos option may be accessible in the More tab of the Computers app.

A workaround is to change the type of video from Home Video to TV Show on the Mac that is Homesharing. In iTunes under Mojave right click on the video and select Video Info then the Options tab. You can then change the type of video.

You could also create a TV Show called Home to help find them in the Computers app on the ATV.