The Neoclassical style of Thibault is defined by a strict adherence to spatial logic and clear geometry. In works like The Ponte di Augusto at Narni and Villa Pamphili, he uses a subdued colour palette to define form. He avoids the cluttered compositions common in late eighteenth-century painting. Instead, he focuses on the relationship between man-made structures and the natural environment. His watercolours and drawings of the Borghese Gardens and Subiaco use light to clarify the physical details of the architecture.

Collectors today value Thibault for the sense of order and calm his work provides. His views of Palazzo Chigi Ariccia and Monte Cavo offer a window into the Grand Tour era without the over-dramatisation found in Romantic art. These prints suit modern interiors because of their clean lines and architectural precision. The work provides a historical perspective that remains visually balanced and easy to integrate into a gallery wall or a minimalist room.