Way back in the 1970s, there was Rock-o-flage (I believe that was the spelling), used a mottled grey, greenish, brownish background with fine darker web pattern to it. In the 1990s they changed the name to Outback camo, if I remember right. It was one of the most effective printed camos I have ever seen. You could hide in plain sight, without die-cut leaf patterns or printed leaves and branches. The only problem I ever came up against was that as it wore and faded due to use, it got too light and shiny to be effective.
Predator is very good, but needs more webbing in it to be more effective.
Natural Gear camo works OK, but everyone seems caught up on printed leaves and patterns. Better to have loops that will accept real leaves and add depth.
Mossy Oak Breakup is too dark, you can spot someone wearing it from a mile away.
Advantage is OK, but just OK. Good background color and patterning, but as it wears, it get too light and shiny.
Shadow Grass is dark, as is Advantage Wetlands.
If you want to know what camo looks like to an animal, try a few black and white photos of people wearing it in the local vegetation. It can be very revealing! Take the pictures from close up, middle distance, and long distance.
In the USMC, we learned that people wearing regular cammies stand out as colored blobs against ANY background unless they are laying in the dirt. Movement is your enemy.