the bluetick, english, treeing walker, redbone and black and tan originate off of the english fox hound, the american leopard hound and plott have different origins, with the plott decending from german and swiss hounds, and the american leopard is thought to come from a spanish decent.
American curs are nothing but a cathaoula crossed with treeing walkers. I like to see some evidence of what German and Swiss dogs u are claiming the Plott came from as well as the American Foxhound which u failed to mention. Sounds like a google cut and paste to me, did u know there are Goodman hounds with glass eyes and merle spots, did you know there are July Hounds and Hudspeths and Birdsong hounds as well?? Have you ever seen the spotted Plotts??? They kinda look like a Goodman hound.