Actually, is known--empirically--that cats were the SOLE cause of the extinction of six of the species on my list.  It's not a matter of 'extrapolations' but of observations, including documented accounts going back, in a few cases, to the 16th century which unequivocally identified cats as the cause of extinction.

It's true that there's seldom a single factor causing a given extinction, even when consideration is limited to invasive species impact alone. In most cases extinctions were brought about by a combination, or "suite", of invasive species’ adverse impacts--example: Hawaiian bird species wiped out via combined impact of feral cats, mongooses, swine and introduced mosquitoes.

The most accurate way to attempt an answer this question is to list those species for which invasive cats were the PRIMARY cause of their extinction, i.e. had the cats not been there, the species would likely have survived. 

This is an example of the difference between us.  I'm honest.  You're not.