The only film I know of that provides us with a lot of details about yuppies lifestyle is 'American Psycho'. Have you seen any other movies describing yuppies lifestyle? I haven't.
I also wonder if anyone here knows films or series (not necessary about yuppies) where the plot revolves around some men who pays a lot of attention to their clothes, fitness, skincare, flossing, etc. I can scarcely think of 'Wall Street' and 'Suits' .