I don't know about you, but I won't complicate myself with all of these variants.
all I know is the 2060 will be great, cheap, and rock 1080p at 60fps. That's great for me (i actively avoid 4K displays, makes me thing I'm about to go blind)
Here, I found some info about the 2060's performance. Hope it helps you!
https://www.technewstoday.com/nvidia-rtx-2060-launching-on-january-2019/