Three types of Raaga
Page 19 of the Dharmafarer PDF says they're explained in the commentary:


  The Commentary here explains them as follows:
  
  
  “abnormal lust” (adhamma,raga) as incest, that is, “lust between mother and mother’s sister and
  father’s sister and maternal uncle’s wife and other such improper situations” ;
  “excessive greed” (visama,lobha) or “neurotic desire,” as excessive greed by way of consuming
  things (in other words, unbridled materialism and
  consumerism); and
  “deviant conduct” (miccha,dhamma) as homosexuality, ie, sex “between men and men, women
  with women.”
  


I haven't quoted the whole page here: see page 19 of the PDF for more.