Final answer:
The provided information does not name a specific fashion designer but discusses figures like Ludwig Mies van der Rohe and William Morris, known for their contributions to design and architecture.
Step-by-step explanation:
The designer renowned for elevating high fashion in an urban space and transforming urbanwear from the streets to high-profile business settings is not explicitly named in the provided materials. However, this concept reflects the influence of designers who blend practicality and luxury, much like Ludwig Mies van der Rohe's approach to furniture design with his iconic Barcelona chair, which married traditional craftsmanship with modern design. Though the question seems to be about a fashion designer, the given information focuses on architects and artists known for their impact on design. For instance, William Morris was significant for his work in changing styles and interior decoration during his era. However, for a definitive answer, one would need to look at fashion designers who specifically worked to bring urbanwear into the corporate sphere, none of whom are mentioned in the provided text.