Among Swiss cheese, curd,statin, Roquefort cheese, how many of them are the result of fungal activity?

Swiss cheese and curd are produced by the activity of bacteria.

Statin - Monascus purpureus, a filamentous fungus known for its fermentation of red yeast rice, produces the metabolite monacolin K used in statin drugs to inhibit cholesterol biosynthesis.

 Roquefort cheese (blue veined cheese) was originally formed by fermentation of sheep milk with bacteria. It is further treated with a fungus, Penicillium roqueforti . Thus, cheese gets its characteristic color, texture and flavor due to aging with the specific fungus.