Hello :)
This is the wcif list of walls and floors used on Kika set.
Please, note that we just were able to do this because we are having a free week. We will not be able to post wcif lists always since this is a very time consuming task. Hope you can understand it.
Thank you!

walls:

Purple plain wall
Classic Wall set Blue & Purple by Peace maker
https://peacemaker-ic.tumblr.com/post/100959080819/here-is-my-classic-wall-set-for-ts4-now-you-see

Ginkgo leaves
Midcentury ecletic Wall set by Peace maker
https://peacemaker-ic.tumblr.com/post/133622170279/this-set-is-a-bit-different-from-my-previous-ones

both chevrons walls
Classic Wall set 'Look at me' tile walls by Peace maker
https://simsationaldesigns.blogspot.com/2015/10/updated-look-at-me-fireplace-and-walls.html

Praline sims modern granite walls
https://www.thesimsresource.com/downloads/details/category/sims4-walls/title/modern-granite-walls/id/1346495/

Retro Leaf Wallpaper by Rirann
https://www.thesimsresource.com/downloads/details/category/sims4-walls/title/retro-leaf-wallpaper/id/1365684/

other walls then those are maxis plain white ones.

Floors:

Hickory Floor Boards by Peace maker
https://peacemaker-ic.tumblr.com/post/167409249042/hickory-floorboards-timber-flooring-for-ts4-cats

wooden flooring by Rirann ( the very blonde one) 
https://www.thesimsresource.com/downloads/details/category/sims4-floors/title/wooden-flooring/id/1292764/

Praline sims wood 3
https://www.thesimsresource.com/artists/Pralinesims/downloads/details/category/sims4-floors/title/wood-3/id/1293121/