No open shelves near your range. They will be a pain to keep clean with grease and such. I do like that layout better though.

I like the cabinet in the corner, too. Make that your appliance pantry. If you have at least 36" between the sink and the cabinet front, then you have enough space to prep. Having said that, for the most efficient layout, the fridge should go where the tall cabinets are on the left, to make a tight prep triangle. It looks as if you plan to put it in a built-in box behind the island, with no adjacent landing space. You can put a full height, shallow larder where the fridge closet is drawn, which will also free up floor space for traffic behind the island. You'll also need a cabinet between the fridge and the wall, to allow the door to open fully.

I have shelves beside my range, and they don't get greasy--just use the range hood. Start it before the steam and grease start to rise, for best results.

I like the first layout better -- maybe I'm just responding to the finishes on that one, which I prefer too. :) I think the open shelves look a bit orphaned there. Any interest in developing those further? Wrapping the corner a little? More shelves on the near side of the window for balance?

Do you have a use in mind for those? If they are just decorative, you could skip em and just enjoy that showstopping backsplash.

I vote for the last layout with extra upper cabinet from right hand.

I'd like to know where your fridge will go. The range hood seems a bit lonely floating in the middle. The right corner cabinet running down to the counter does balance nicer with the larder to the left, but I do appreciate your concern about losing counter space. Would you consider upper cabinets on both sides of the range hood? Perhaps the hood could be in a contrasting colour (like your countertops) to break up a big wall of white. If you're going with stainess steel appliances, you could go with a ss hood with a narrow vent tube to display more of your stone wall.

I like your second idea of adding uppers. You can NEVER have too many cabinets. The current trend of open shelving is going away now and you don't want to date yourself. Go ahead and make a stand out range hood too, that is on trend.

Your dishes, glassware and silverware need to be stored near the dishwasher so emptying the dishwasher will be most convenient. You have no upper cabinet nor large drawers near the dishwasher for these items, which will be the majority of items in the dishwasher.
Before you finalize your layout, write down a plan of where you will store all your kitchen stuff: dishes, glassware, flatware, mixing bowls, pots and pans, large pasta pot, cooking utensils, baking dishes, cookie trays, bread pans, casseroles, foil and plastic wrap, small countertop appliances, etcetera. Be sure you plan electric outlets for countertop appliances. You need upper cabinets on both sides of the window

IMO you have lost 1/2 the counter space with cabinets that sit on the counter , forget the pot filler biggest mistake in any kitchen and the cause of more leaks than I can count. No to open shelves near any cooking appliance . IMO where you have the cabinets sitting on the counter is the perfect space for pullout pantries which can house all your small appliances and food in the actual work space. I see no place for dishware or glassware near the DW and when you say butlers pantry I would need to see the actual floor plan , I have found this is the new word for a walkin pantry so I need to see where yours is. I don’t see the fridge and do not have a clue as to the dark blue item. The fridge should allow access to the sink without passing the range. I see a wastedd corner. Who is designing this space ?

Thank you everyone for your ideas and feedback! I appreciate it and will definitely use them to finalize my design!

Yes, the cabinets on top of the counter are my least favorite kitchen item. They take up "precious" counter space, for one thing. For another thing, spills and cleaning fluid will eventually meet the sides of the cabinet, and have their way with the finish or the wood underneath.