This is quite common for a label to repackage albums like this. And then put them out in a series with a common title on them.
With the titles, it is where a bit of common sense is allowed. You are aiming to show what is on the cover, but no one should shout at you if you make the order consistent.
If in doubt, you could use the Spine as a guide. I’d expect the spine will stay in the same order even if the cover sometimes puts “Sparrow Double Play CD” at the top, and other times puts it at the bottom.
I expect if you look in Sparrow’s catalogue on their website they name them in a consistent manner.