query: SELECT ?property ?propertyLabel (COUNT(DISTINCT ?item) as ?ct)
  WHERE
  {
    ?property wikibase:propertyType wikibase:ExternalId; wikibase:claim ?p; wikibase:novalue ?wdno .
    ?item ?p [ rdf:type ?wdno ] .
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }
  GROUP BY ?property ?propertyLabel
  ORDER BY DESC(?ct)