I have a couple of grapevines in my backyard in Nashville, Tennessee (Southeast U.S.). They are unique to me as I have never seen any like them before and would love to receive some feedback as to the names and other attributes of each.
"Variety 1." Description of the variety 1 grape is as follows: Leaves small, rough, and wither quickly. Fruit oval shaped, 3/4 inch long and 1/2 inch wide, and the color starts with a watermelon appearance (dark green with light green stripes) and then turns noir (black) as it ripens. Non-clustering, single grapes.
Here are Variety Ones' pictures:


Variety Two:
Variety Two grows in bunches and turn in color from light green, to scarlet red, then to a light purple. The fruit is approximately a quarter inch in width and circular. The leaves are medium in size, about 4-5 inches across and the texture is smooth. Here are the pictures for those:


Of course, any help would be appreciated. And thanks for taking the time to enjoy nature!