Top Hat
This list has its share of White Castle copy-cats, but this is a copy-cat one with a different spin to it. Top Hat was first introduced into the world of fast food by Peter Everet Westberg and Fred A. Simonsen in 1955 in Detroit, Michigan.
Source: Facebook
While most White Castle imitators were created from the outside looking in, founders Westberg and Simonsen had the benefit of insider knowledge. The two were both former White Castle employees.