Original: As individuals, they are more often notable in their own right than most individuals: They disproportionately circulate amongst political and social leaders and the wealthier classes, and they are more likely to be scrutinized as part of celebrity culture.
Simplified: As individuals, they are more often notable than most individuals: they know many political and social leaders and are part of the wealthier, upper classes. They are more likely to be viewed as a part of celebrity culture.