Sometimes you might see a product similar to yours listed under a certain category which is not selectable from the category list on Walmart or GeekSeller.
For example, on Walmart you may see:
But in GeekSeller you see:
These specific categories are assigned by the Walmart system based on the category you have selected either on Walmart Seller Center or GeekSeller, therefore it is crucial to choose the most appropriate category for your item. The goal is not to find the exact category, but to provide Walmart with an idea of what family of products your product belongs to.