To give you a helpful answer, I need more information. For example:
* What period are you interested in? Dutch art has a rich history, from the Golden Age (17th century) to modern and contemporary art.
* What style or movement are you focusing on? Dutch artists have been influential in various movements, including realism, impressionism, abstract art, etc.
* What criteria are you using to define "leading"? Are you looking for the most famous, influential, or innovative artists?
Once you provide me with more details, I can help you determine which artists might not be considered among the leading figures in Dutch art.