Yes, Kadota and Dotato is the same cultivar.
Californian should have left the original name of the tree ,as it was imported from Italy and not mess with it and create confusion.
Ka-Dota,means= Kalifornia-Dotato
Edit note:As For Peter Honey,some people swear ,it is different than,Dotato,some included me say it is the same.
My Peter Honey was identical to Dotato except it was ,very much infected with Fig mosaic disease,so I discarded it.
Later after a few years of patience I discarded Dotato ,too,because it will not ripe properly here due to climate ,not being warm enough.
Dotato:Means, Adapted, in Italian,and suggest the tree can take adverse climatic conditions,but here it was not ripening properly.