Need help ID'ing and cleaning white leather sectional

Hi, hopefully my question is appropriate here. I purchased a used Ligne Roset white leather sectional. It's about 8 years old and the areas of heaviest used are noticeably discolored. I'd like to do what I can to "clean" these areas so it appears closer to what it looked like new. I've attached to cross-section photos from the pillow, which hopefully be enough information to ID the type of leather involved. The other photos show the contrast between a barely-used, matching pillow and the seating areas. Any assistance is greatly appreciated, thanks!

I realize now how enormous my photos are. I can try to re-post smaller versions if that would be helpful.
Thanks in advance for any advice.

Pictures are good!

>>> which hopefully be enough information to ID the type of leather involved.

This leather is identified as ‘Pigmented’ (Monotone-Embossed).


>>> It's about 8 years old and the areas of heaviest used are noticeably discolored. I'd like to do what I can to "clean" these areas so it appears closer to what it looked like new.

Use Prep-7.7 > Clean-3.8 > Rinse-3.0 > Protector-B system.
The main product to removed accumulated soiling is with Prep-7.7 and I would apply and leave it overnight for the product to does its work that will reduce unnecessary physical effort that may remove some weak areas. A soft horsehair detailing Brush-1 is only need to agitate the suspended soiling with Clean-3.8 and rinse to a squeaky-feel with Rinse-3.0. If some areas are absorbent I recommend to rejuvenate the leather structure for suppleness with Hydrator-3.3 > Fatliquor-5.0 system, otherwise wait until micro finishes cracking appears or a darkening effect after rinsing. Thereafter Protector-B will impart a non-stick surface and reduce friction rubs with a buttery feel. Option for the leather scented version is available as Protector-B+.
You may see the above-mentioned products in this Kit-P3 and refer to the instruction for Restorative Care

http://www.leatherdoctor.com/kit-p3-...ther-care-kit/
Attachment 6188

Refer to this Pigmented (P) Monotone Leather Problem Solving Guide other than #6 accumulative or restorative cleaning as described above.
Attachment 6189

Images are good and also products.