All patterns I received.
Woodland, Desert, and "Mod" Desert All Over Brush
Comparison of differences between the Desert and Mod Desert patterns
Next, onto the track family of patterns:
(from left to right, per attached labels) Woodland, "Dark" Woodland Mod, Urban, "Dark" Urban Track Mod, and "Mod" Desert Track
Comparison of Woodland (left) and "Dark" Woodland Mod (right) patterns. This is puzzling, because the so-called "dark" pattern is of a much lighter colour palette than the regular woodland pattern.
Comparison of Urban (left) and "Dark" Urban Track (right) patterns. Same as above, the darker variant seems to have slightly brighter colours, just a subdued contrast against its counterpart. You can plainly see the colours chosen for UCP in these patterns... I'd say UCP is a digitised middle ground between these two patterns, but still slightly favours the regular Urban Track.
Comparison of "Dark" Urban (left) and Mod Desert Track (right) patterns