Arc-hive-omeka-theme/view/omeka/site/index.phtml

<?php

$translate = $this->plugin('translate');

$this->htmlElement('body')->appendAttribute('class', 'site browse front');
$title = $this->setting('installation_title', 'Omeka S');

$subtitle = $translate('Sites');
$this->headTitle($subtitle);
?>
<h1><?php echo $this->hyperlink($title, $this->url('top', ['action' => 'index'])); ?></h1>


omeka/site/index.phtml

<?php if ($sites): ?>

<?php echo $this->partial(
    'common/cross-site-search/fulltext-form.phtml',
    ['action' => $this->url('search', ['action' => 'results'], true)]
); ?>

<?php
$archiveSiteHelper = $this->getHelperPluginManager()->get('archiveSiteMeta');
$collections = $archiveSiteHelper->getCollections();
?>
<!--
<h2>Collections</h2>
<hr />
<p>
<?php foreach($collections as $collection_label => $collection_name){ ?>
  <a href="/c/<?= $collection_label ?>"><?= $collection_name ?></a>
  <br />
<?php } ?>
</p>
-->

<!-- <h2 class="site-list-heading"><?php echo $subtitle; ?></h2> -->



<div class="site-list">

  <table>
    <thead>
      <tr>
        <th>Site</th>
        <th>Curator</th>
        <th>Collection</th>
        <th>Date</th>
      </tr>
    </thead>
    <tbody>
      <?php
      foreach ($sites as $site):
          $site_meta_values = $archiveSiteHelper->getSiteMetaValues($site);
          echo $this->partial('common/site-list-entry', [
                          'site' => $site,
                          'site_meta_values' => $site_meta_values,
                          'archive_collections' => $archiveSiteHelper->getCollections(),
                          'showSummary' => true
                        ]);
      endforeach;
      ?>
    </tbody>
  </table>

</div>


<?php echo $this->pagination(); ?>

<?php endif; ?>
<p><?php echo sprintf(
    $translate('Go to the %1$s to start working with %2$s.'),
    $this->hyperlink($translate('Admin dashboard'), $this->url('admin')),
    $title
); ?></p>