Hi,
The results page layout is a theme related feature, most themes may not be coded to display featured images for media files. It is however possible to request the image URL via a theme function: get_asp_result_field('image');
If you are using a child theme, then this function can be used to request the result image URLs.
To remove the title text from the results, it’s probably the best to use custom CSS for the styling to fit properly:
.asp_content h3 {
display: none !important;
}