By Korean standards, it's probably:
Jisoo > Miyeon > Jennie > Chaeyoung > Lisa
I wouldn't take netizen comments too seriously at this stage. The Red Velvet girls got a lot of hate for their visuals when they debuted, and now look, they're getting praise left right and centre. K-Netz are fickle when it comes to that sort of thing.
For me though, and I have to be honest, Jennie just stands out with her looks the most. I just cannot put my finger on it, but there's something about her that immediately draws my attention to her. She's very unique and exotic looking, but also does have some of that beauty that Korean people love. She's also really girly but at the same time has a lot of swag and fits the YG mould very well.
I think she just has a certain aura and star quality that can immediately draw people in, and that's probably why YG likes her so much. One of the very few times I can actually see where he is coming from.