Broadly similar entry in other lexica, including Hesychius kappa3062 and Etymologicum Magnum 521.49-51. Accusative plural there, and in Polyaenus 4.1.1. But irrespective of the case, the Suda's spelling with omicron as the second vowel is in fact unparalleled elsewhere. For *Klw/dwnes see Plutarch, Alexander 2.7: 'all the women of these parts were addicted to the Orphic rites and the orgies of Dionysus from very ancient times, being called Klodones and Mimallones'.
cf. eta 336 and mu 1072.