I noticed that the bags are divided into collections. Is that according to the type of leather it is? I was wondering because my favorite type of leather is like Not Rational's naked leather...buttery soft, kinda thicker, and pebbled. I love buttery pebbled leather. If I can figure out the leathers, then I can just look at the styles in the leather that I like. Thanks in advance for helping! I'm so curious to try this line!