The most successful new brand is probably Palace and that brand is majorly successful. Which is somehow ignored in your post. Its only been with major distribution to get product distributed in the United States.
I don't disagree with you on their success but also I don't consider Palace
new, still going after what, 7-8 years? Hardly considered a startup in this industry.
To the other posts about FA success as a designed-to-be-bourgeois brand sure, they're doing it and Dill/AVEare making money and good for them, they found their niche but maybe we're (I'm) talking about the same thing here: Core brands (DLX, BakeBros) vs Bro Brands (No.Co, WKND) vs Bourgeois brands (Palace, FA, Chandon).
Also, people buy (and actually where) shit like this for $100?:
https://fuckingawesomestore.com/collections/frontpage/products/cut-outs-work-pants-khaki-black