Among the three listed fauna:

Lion-tailed Macaque: Lion-tailed macaques are diurnal, which means they are active during the day and generally not nocturnal.

Malabar Civet: The Malabar civet is mostly nocturnal or most active after sunset. So, only the Malabar Civet is generally nocturnal or most active after sunset.

Sambar Deer: Sambar deer are typically crepuscular, which means they are most active during dawn and dusk. They are not strictly nocturnal but are known to be active during low-light periods.

So, the correct answer is: Only two (Malabar Civet and Sambar Deer) are generally nocturnal or most active after sunset.