Though that Black Pineapple I'm pretty sure must have crossed with something else, it's normally green with splashes of red, not orange with red.
[Image description: a cutting board with seven medium to large sized tomatoes of varying colors, with the name next to each. The tomatoes are the Golden King of Siberia, the Black Pineapple (or Ananas Noire), the Berkeley Tie Dye Green, the Sart Roloise, the Dr. Wyche's Yellow, the German Pink, and the Black Beauty.]
How different do they taste between each other?
Quite different! The Golden King of Siberia is probably the sweetest of the bunch, with the Berkeley Tie Dye Green being the most savory, and the German Pink the closest to your standard tomato flavor, and the most acidic.