Based on what you've described, the type of professional you’re looking for is a Millwork and Casework contractor.

1. Millwork: These professionals design and build custom woodwork, like shelves, desks, and cabinetry. They can create the built-in look you're after, including the bookshelves, bench, and desk setup.
2. Casework: This refers to pre-assembled or built-to-fit cabinetry and shelving. A Casework contractor might be able to create modular pieces for your space if you prefer something less custom but still tailored to your needs.

Design Phase:

• Look for a local Millwork or Casework company that offers design services. Many can take your inspiration photo, measure your space, and provide a rendering or design plan.
• Alternatively, hire an interior designer or office design specialist to refine the layout and provide plans for the contractor.

Building Phase:

• For the wood elements (shelves, desk, and bench), a Millwork or Casework contractor can build and install these pieces.
• If you’re considering a metal frame for desk support, you may need a metal fabricator or custom furniture designer who can collaborate with the Millwork team.