Find a local cabinet maker who can CNC flute a MDF panel. This is not at all an inexpensive project.

Sorry what does CNC mean?

Computer numerical control. A CNC router is guided by a computer to cut whatever shape has been programmed. I have one, but not the same scale a cabinet shop would have. Minardi is pointing you in a good direction. Another would be to check with a local mill to see if they have any moulding profiles that could be stacked to replicate the look.

It is hard to tell if that is curved fluting or just 1x1 strips nailed down and painted over - sort of a narrow board and batten look. Easy enough to DIY - some patience and and elbow grease.

I think you can find these panels at Big box stores.

Narrow spaced panel

Slat wall - just change the spacing to suit your wall.

IMO the easy answer is trim to create the look and to aslo fit the wall properly . Just remeber a feature wall is excatly that and usually a darker color and in your case I would try to match the wood on the sofa or plan a color that will work with whatever wall color you choose for the rest of the space . Accent walls work best when they connect to something else I se them sometimes to go with art for instance .