I don't know what you are talking about.... I don't know about foriegn fans, but Nayoung is the most popular and famous member among those girls in Korea.
Taehyungs Wife nayoung and pinky are actually the most the most popular member in pristin. this is popular rangking in pristin 1. pinky 2. eun woo 3. xiyeon 4. nayoung 5. rena (from netizen intern and korean)