view modes

  private function getBundlesWithViewmode(string $entity_type, string $view_mode): array {
    $bundles = [];

    foreach (\Drupal::service('entity_type.bundle.info')->getBundleInfo($entity_type) as $bundle => $info) {
      $view_modes = \Drupal::service('entity_display.repository')->getViewModeOptionsByBundle($entity_type, $bundle);
      if (isset($view_modes[$view_mode])) {
        $bundles[] = $bundle;
      }
    }

    return $bundles;
  }