How to fetch fields related to node in view templates?
In my opinion it's better to write a template preprocess for your view in yourtheme.theme file. hook_preprocess_views_view()

function yourtheme_preprocess_views_view(array &amp;$variables) { 
  if($variables['view']-&gt;id() == "your_view_id") {
    if (isset($variables['rows'][0]['#rows'])) {
      $nodeValues = [];
      foreach ($variables['rows'][0]['#rows'] as $value) {
        $nodeValue['taxonomyValues'] = $value['#row']-&gt;_entity-&gt;field_taxonomy-&gt;entity;
          :
          :
        $nodeValues[] = $nodeValue;
      }
      $variables['node_values'] = $nodeValues;
    }
  }
}


Above, is a sample code for fetching a taxonomy reference field. Fetch required fields and pass it in your own variable to views-view.html.twig file

To further give template suggestion for views-view.html.twig use 

function yourtheme_theme_suggestions_views_view_alter(array &amp;$suggestions, array $variables)


In your views-view.html.twig

{% for value in node_values %}
   {{value.taxonomyValues}}
{% endfor %}