I can’t believe how many new cat breeds keep coming to the forefront. Have you ever heard of the Black Bengal? Wow! What a beauty. Here’s a site showing a Black Bengal kitten where the spots show through. Stunning. https://bengalcatrepublic.com/what-are-melanistic-black-bengal-cats
You might also be interested in knowing that these cats are extremely rare and expensive. While they reportedly make a wonderful pet in some ways, don’t expect a cuddly lap cat or a quiet home after purchasing one. They are highly active and independent and do not like to be picked up or held. 
And they are vocal—evidently loudly vocal. Some say these are specialized needs cats because they are so energetic.
There’s also another very interesting cat I don’t recall hearing about. It’s known as the California Spangled Cat. This cat is a cross between many breeds including the Abyssinian, a Siamese, American short hair, British, Shirt hair and Angora came about as an attempt to create a leopard-like domestic cat in order to raise awareness of wild leopard poaching for their pelts. And they priced them extremely high in order to fund projects to protect endangered species in South and Central America.
The California Spangled Cat was first introduced through a Neiman Marcus Christmas catalog in 1986. They’re so rare they are not recognized by any breeder association. Now these are good-natured cats that evidently make excellent pets. Se photos and learn more here: https://www.petguide.com/breeds/cat/california-spangled
