#2 and #3 are clearly ahead of the rest. They're basically the same layout but with different fonts.
In discussing the covers, people had suggestions for how to improve them. I've collected these and have put them together. Most, but not all, are variations of #2 and #3.
1 2 3 4
5 6 7 8
9 10 11 12
Dimensions that can be refined if you have any ideas:
Font
Colour of font
Colour of image
Thanks to all of you who are still with me here!