Magnus request was very good but here an other one : the 100 author with the most page on Wikisource.
Caveat, there is still a lot of work to do on Wikidata, some pages are probably missing (I can help there if needed) and the real numbers are higher than this request show. (and sorry, the label service label didn't work "time out")
The top 10 is : id name number wd:Q16867 Edgar Allan Poe 28 wd:Q9061 Marx 27 wd:Q692 Shakespeare 25 wd:Q34787 Engels 24 wd:Q7243 Tolstoï 23 wd:Q22670 Schiller 21 wd:Q7200 Pushkin 21 wd:Q5879 Goethe 20 wd:Q6197 Horace 20 wd:Q501 Baudelaire 20 (not exactly what I foresee before, the UN texts and the Bible has no unique author, it's logical it doesn't show here ; I forgot the russian author, mea magna culpa! and in fine, I'm surprised and sad not to see Doyle, Dickens, Stevenson, Verne here... at least, they are not far behind and they made it to the top 100 ;) )
Cdlt, ~nicolas