If you are a Video Publisher on Youtube then you can see some other videos showing on your channel. By default, YouTube displays a list of videos you have liked on your channel. So if you don’t like to show those unwanted or other channel videos then you can hide or remove permanently from your Youtube channel.You Need to do some simple steps to hide or remove them on your Channel.
Steps To Remove Other Videos From Your Youtube Channel?
1. First Go To Youtube.com
2. Click on your user icon at the top right of the window then click on the setting icon
3. Next Page Click ‘Privacy’ and tick mark on ‘Keep all my Liked Videos and Liked Playlists private’
4. As a suggestion While you are there, you also tick mark ‘Keep all my subscriptions private’
5. Click ‘Save’ to save the changes.
So I think your did all the simple steps for hide or remove undated and other channel videos from your channel.This will help you get more videos and also if you do not like people, potentially anyone with access to the Internet, to see the videos you have liked.