Will you do the same color for your trim?

Yes, I was thinking chantilly trim and walls. Different finishes

My favorite neutral white is Sherwin William Cheviot. It's pretty neutral without cool or warm undertones.

The inspiration photo is beautiful. Your floors are quite similar.

Unscrew one of your kitchen's recessed lightbulbs and write down the color temperature on the label or take a photo of the label. Is it 4000K or over? The color temperature of the lighting affects the paint's appearance, sometimes dramatically, so it's important to use the lighting you prefer when testing new paint colors.

That’s really helpful. What should it be?

I like 3000-3500K bulbs. They are usually sold as "bright white", not "warm white" (2700K or so). 4000K and up are usually sold as "daylight". "Daylight" bulbs are often preferred for workshops, garages, and other places where people are doing close-up work such as sewing. They are occasionally used for hoods over cooktops and for other task lighting in kitchens.

I like the 4000 in light bulbs, and I always buy ones that say daylight on them.

If thats your kitchen in the pictures above, why are you buying new ones, or painting those. They already are white and look to be in great shape. Pick a an actual color for the walls, to compliment all the white you already have. It needs something to make it look a bit more interesting.

Tell me more. Like what color would go with the inspiration picture and the current cabinets and floors?

Your tile floor, black counters and bar stools, and the rush seats on your dining room chairs are leaning more country, than the elegant neo classic look you're after. its not just the colour of your cabinets.

You could use a light sage green, or almost any color, whichever is your favorite. I wouldnt go for anything to dark, whatever you pick should be light. You do need a bit of color (and so does your inspiration pictures). The kitchen right now, has gray floors, and white cabinets, and some black, but, there is nothing there that says, anything about your personality. Its just plain and a bit boring.

Totally. I’m scared of choosing the wrong color and default to white
To white e

I'm not a fan of using bright white colors in historic homes, and I don't see Chantilly Lace as a soft neutral. My go-to in my 1920s Colonial Revival is Ben Moore Linen White, which is quite warm/yellow. If that's not your vibe, then BM White Dove is a warm white that would work. But as Kendrah said, decorating with all white is tricky, and can go bad if you're not skilled or confident in your choices.

If the tile floors in the kitchen have not been professionally cleaned recently, you can get that done to see if they come out much brighter and whiter. The grout can be painted to match the off white tiles (one of their colors) to make them lower contrast and looking new. They won't look like the shiny marble (peeking out of the front edge) in the inspiration photo, but they could look a lot less rustic. Aim for the color of French limestone. Here's a before and after story with good photos: https://semistories.semihandmade.com/diy-grout-paint/

If you plan to replace the tile floors, you can have a hardwood floor specialist match the existing beautiful dark hardwood.

It looks to me like the existing walls are a soft neutral already. Why spend money painting them a different neutral? Your inspo pic has a pricey, luxe look. I'd save your money for furniture. And do something about the strange things on the windows.

Sigrid, those strange things on the windows are called lambrequins.

This is tremendously helpful. Didn’t know the grout can be painted. And didn’t think to get it cleaned professionally. I will look into this. I really hate the floors.
Yes, the lamrequins have been removed! Going to paint the frame to the fireplace white.
Welcome any other design tips you may have for any / all of this space!!

Also, I’ve pulled the carpet off the steps, sanded and stained. Looking for a runner that is elegant, uncluttered and in theme. Recommendations appreciated!

…and added chair railing and trim to the foyer and up the steps