I like LeeValley for pulls and knobs . Gold fixtures ? Like what fixtures? I have no idea of your style really . Maybe a bit more info and some pictures of the gold pieces you are using.

Not sure what your budget is but I've always loved Rejuvenation's hardware! They have such classic profiles and beautiful finishes. Plus, they have a lot of examples of mixing their hardware, which if nothing else can inspire some combinations for you.

We used Top Knobs throughout our renovated home. Huge selection, not overly expensive.

The fixtures look like this.

I will second Top Knobs, also check out Atlas (which is owned by Top Knobs). Rejuvenation is a great resource. I also like Restoration Hardware, but it is pricey. Also, check your local independently-owned stores (not Lowe's or HD) to see if there are any that sell knobs and pulls.

I love the "Look in the Attic" website <https://www.lookintheattic.com>; for pulls/knobs. Their products are well made and well priced. They were very easy to work with - samples etc. And they had lots of polished brass which was what I wanted.

Top Knobs from amazon or wayfair, great quality. Get a few samples first to see what you like, I thought I wanted a cup pull but just didn't look right on my cabinets so we went with a regular longer pull. I would do chrome or black in that kitchen. Gorgeous!

I do agree with getting samples, whether you buy them locally or online. I ended up with an overabundance of samples but it was worth it to ensure that they worked for myself and everyone in my family. I don’t know your budget but as much as I liked them Rejuvenation and Restoration Hardware ones were beyond mine. I ended up primarily with Top Knobs and have been happy with them.

Check out Subtle Surge in satin gold from Wayfair! One of my best bargains during this house build!

I ordered from Menards. They had what I wanted for about 1/2 the cost I could find them anywhere else, tho I did also find them at Amazon for almost the same price.

I don’t see a sink cabinet.....does the sink go under the window?

Yes, under the window

I am going with Atlas sleek in champagne bronze and will also have gold lighting fixtures. I ordered samples of a few Top Knob and Atlas pulls and thought the feel and weight of the Atlas were a bit better, but I've noted quite a few people on the forum have been very happy with Top Knobs.

I too, would hold one to see if they were comfortable , but look wise what is wrong with the brass pull you chose in your idea book? It goes with your lighting and has already called to you.

In a more healthy time you could go check them out at a showroom or business. But now: look at the measurements closely. If you have some pulls in your house now that seem to be the right size use them as a guide. It is the length between the two holes that determines how large the hand space will be.
Stainless appliances? If that is the case you could get simple satin nickel to go with the appliances. Then let the brass light fixture be highlighted. Brass pulls can be pricey. You could get some pretty brass boxes and containers from import stores like Pier One and World Market or Houzz. This kitchen is going to be stunning

Most showrooms and suppliers of building materials have been open or have opened back up. Most require appointments and masks, but that is easy enough to do, so you can get in and take a look at the products in person.

Also try to order through local brick and mortar stores. Many will match internet prices. I am willing to pay a small markup to buy local and have someone available locally should there be any issues with the product.