To show them in columns (effectively a grid, would mean you would need to code the template to have HTML and CSS to make this happen.

As you are using our shortcode method the display of the results comes from our results.php file. You would need to customise it as described (in basic form) here:

https://searchandfilter.com/documentation/search-results/using-a-shortcode/#customising-the-results

You need to remove the lines::

<p><?php the_category(); ?></p>
<p><?php the_tags(); ?></p>
<p><small><?php the_date(); ?></small></p>

To remove the featured image, remove these lines:

<?php
if ( has_post_thumbnail() ) {
  echo '<p>';
  the_post_thumbnail("small");
  echo '</p>';
}
?>