My 2 Cents:IF Bass pix,represents,Breba ,Noire de Caromb,then,I have no doubt,Kathleen Black is Identical to Noire de Caromb.
That is because I had breba and main crop,off my Kathleen Black.
My opinion:The above pix are Breba figs.
Main crop on Kathleen Black were smaller and not so much elongated,+They had a richer taste compared to Breba.
PS:Marcello Filochiaro,an accomplished gardener in France,with whom I traded cuttings 3 years ago,told me that Noire de Caromb,doesn't have very tasty fruits,so,he dosn't recomend it forme,yet he gave me at least one cultivar,turned out exceptional,in trade,so I have no reason to doubt him.
So presently,I am very pleased with Kathleen Black,as a large black fig,moderatelly hardy,to this point,and ,I am not even looking for Noire de Caromb,because I do not think will be a better fig compared to Kathleen Black.