I prefer the look and function of three sconces.

one is much different than 3. If three is more the need .... I would get something compact but also more functional like these. [directional capability / brighter/ smaller w less emphasis on looks]

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if One will suffice , depending on your assessment of UV and the space there......then I'd go more w a brighter spotlight to be sure and get really good light even if you dont need the light to spread left or right. Otherwise , directional sconce w arms and stick with two.

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Recessed 4" LED on a dimmer is my rec. 450 lumens at the counter. The light can be positioned 6" in from the edge of the counter so you don't cast a shadow. Halo, Cooper and DMF are brands.

I think two would be enough. I like the downlights in your third rendering, or a pendant like the next picture. I just don't like clear glass pendants. I don't want to be able to see the light bulb. The downlights would direct light where you really want it. As long as you don't have really high ceilings recessed lighting works. 8'-9' is not really high. This decision also depends on what the style of your kitchen is. The kitchen shown below has what looks like a larger window with three downlights. The window is also divided into three sections so it makes sense.

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Sconces on an arm above the window are for sure the most visually appealing. Although your window is wide, the amount of space on either side of the window is rather small so I think three will look like over kill on that wall. I'd go with 2 and center them on the 1/3 lines. There are so many options for finishes and style in these types of light. They are practical and decorative at the same time. I love that your cabinets are going to the ceiling. Smart choice!

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I'm doing the recessed lighting in the rest of the kitchen so thought maybe that it would be too boring to have that above the sink as well - you know, the three layers of light thing. There is no island or anything else that will have any type of "decorative" light so this is my only opportunity to add a bit of a designer touch.

I'm not really sure what my style is - kind of a mix between modern farmhouse and traditional. I'm installing warm brown cabinets (Kraftmaid Grandview with Saddle Stain) with a white quartz countertop with brown veining (MSI Calacatta Miraggio Gold). The cabinets are a shaker-ish style. We have wood LVP flooring (Home Depot Maple Syrup) that has a large variation of browns. My appliances are stainless steel and the drawer pulls will be a satin nickel so I was going to go with satin nickel for the light fixture as well. Main goal was to create a timeless kitchen that isn't too trendy. I really do not want to have to do this again in another 10 years.

I do like the sconces on arm, but with the satin nickel they look a little too industrial. I've also tried looking at fixtures with frosted glass but that looks a little too 80's or contemporary for my style. Right now I'm leaning towards just the single pendant because I think it will go nicely with the chandelier I have picked out for the adjacent dining room.

Or, I can't make up my mind, I may just keep it boring and go with just the LED recessed lighting all throughout the kitchen.