Now if we talk about my personal opinion, Le Sserafim are just average.
At debut I could mainly just see Garam and Yunjin.
No one is a hole but they are far from all visual lineup.
Here are some pictures I think show it:
Of course the photography and styling varies in how good it makes the members look, but overall I wouldn't really say they're consistent
Compare various HQ pictures of NewJeans
(Honestly LSF look better on the Music Bank interview cam but NJ looks better in all other situations)
Compare the two groups at MAMA and MMA red carpet
Obviously there's a difference in how they are styled but all stylists try to make idols look beautiful, and I think only NJ stands out more to the common eye