Hi David, I also have the same requirement. As you suggested, I made the excerpt value to 0. Still the content is being displayed under the thumb image in my websites home page.
Please note that there is no content in the excerpt field in the single post. So it is fetching content from post itself.
I am using a child theme.
What should be the solution? I want only thumb images and titles to be displayed on home page of my website. Here is the link of my site – https://likesfair.com
Please suggest.