It depends on your budget. Here’s one, and you can shop around; other vendors have it, also.

https://www.myswankyhome.com/product-page/element-etagere

You can also search Amazon for that one, as well as for etageres, in general.

You have a nice place. Very nice style.

It is difficult to ascertain where the etagere(s) will be placed, based upon your pics (which some of the pics may not be of your actual place(?) . So a pic of the actual long wall, where it/they will be going, would likely be helpful.

(Forgive me if I am just not seeing the setup in your pics correctly. I am not really awake yet. ;)

an etagere may be too fragile looking for your space. How about a large/long cubby type unit to showcase your collection. Fill the wall and eliminate the little things, paint it the same color as the wall.

I'd also remove the screen separating the kitchen from the living room and place a long narrow sofa table behind the sofa as your separation, all facing into the living/seating area.

IMO they will add to eye clutter on that wall. I would do a really long buffeet type cabinet with some decor on top maybe lamps and can be quite shallow and an interesting piece in maybw a nice wood . I am not in favor of a bunch of stuff cluttering a wall with stuff not needing display . So maybe explain what it is that cries out for display .

Best wishes with your new place.

You can also look on Etsy for etageres. You can search for etageres, vintage etageres, etc.

Here is one link:

https://www.etsy.com/search?q=etageres&ref=search_bar

Lots of fun and interesting things to be found on Etsy; plus, there are some custom options. Also, nice pricing.

Here are a few things that I saw on a quick search. I saved them in my cart; so if you want any links, I can provide them.

On this first one- right below this image, is another pic featuring two of them together.

A couple more:

Fun corner piece; it’s available in a bunch of colors:

And below, not technically an etagere - but this one came up in the search. A plant stand, with built in grow lights!

These are just a few things. There’s a lot to explore over there.

IMO wait untilyou move in then show us the wall you are asking about.,

You need some wood in the mix, you have enough metal. This piece is from West Elm, not cheap, but an idea you can copy.