Alternatives to the Amazon brand SUUKSESS??

Hi! I have been shopping for myself and my sister (upcoming bday), who has been adding pieces from Suuksess off Amazon to her wishlist. Their pieces are often double lined, buttery soft, and seamless basics such as camis and other athleisure. Are there any better brands out there I can search for similar pieces? I am determined to stay sustainable when I shop, especially for her. If I can find better brands, then I can put her onto them as well and encourage her to stop shopping from sketchy companies. I am also on a budget, but I will take any suggestions! Thank you.