Hi there! Is this photo from Houzz? If so, you can ask a question directly on the photo and the professional who has uploaded it will get notified and hopefully be able to give you some answers :)

Different kitchen companies use different suppliers. Be it door panels to draw runners. Have a chat to a kitchen company or two that you're thinking of using. Some companies have budget standard hinges and runners as well as high end stuff. Decide on the quality standard rather than branding. Blum have high end and bog standard components for every budget. Polytec make door panels but not sure on the 'shaker' style. Laminex Industries also make panels, again not sure if they make a 'shaker' style.

Our apartment is perfect for my partner and I as we love monochrome, soft colours and grey! The owners before us loved the red and black combo so added a HUGE red glass panel stuck onto the black caesarstone splashback as a feature. They did something similar in the bathroom over marble (gasp!) and in the study they replaced the inbuilt black wooden desk with red wood laminate. As it is super expensive to replace marble and caeserstone it is something we can't do right now and have to live with it. I tend to block it out of my mind... It's horrid.

We're doing the same, 2 sets. Want wood but have been told they "may" warp, even though under a covered alfresco. Don't have a firm cost yet but indication from builder is $10-15k more than powder coated aluminium. Total width of each set is 3250 divided into 3 doors, with stacking security screens. Don't have a price for the aluminium ones yet to compare but +$10-15k has probably helped with the decision. Have bifolds at current house but will be going for stackers at the reno house because they can have the stacking security screens, whereas bifolds are difficult to security screen, you can flyscreen but it's quite a flimsy arrangement.