To be honest, comparing Wy and NJ isn't a great example because all of them meet the very strict Knetz beauty standards. The difference is, Wy gets a lot of attention for her looks more than NJ members because she's an IT Girl that already well-known as the center of IZ*ONE and the winner of Produce48, which are huge in Korea. So, it's not only about looks anymore.
that's why i said newjeans "sound" trend. i'm not comparing visuals here. the point i'm trying to make is that music won over looks in their case