query: SELECT DISTINCT ?eponym ?eponymLabel (count(?item) AS ?count) WHERE {
    ?item wdt:P31/wdt:P279* wd:Q6465 ;
          wdt:P138 ?eponym .
    FILTER NOT EXISTS { ?item wdt:P576 ?x }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . }
  }
  GROUP BY ?eponym ?eponymLabel
  HAVING (?count >= 2)
  ORDER BY DESC(?count) ?eponymLabel