Congrats on such a nice large kitchen & dining area!

It's hard to guage the yellows you've chosen, but unless you are changing out the floor, I think you are going to want a beigy-yellow. I would probably paint your choices so far nearer the floor in addition to what you painted near the cabinets, then choose the one that best matches both. If all the molding trim in your home on the door, floor & window moldings is white, that can stay white.

I'm not an expert, but based on the pictures you've posted (and computer colors are not always accurate) your flooring doesn't appear to "clash" with the cabinet visible, especially the island. So I think you would just want to search for the yellow that looks best with the floor & cabinets.

I wouldn't worry so much about the adjacent living room. Matching what's in the room itself is the most important.

I like the taupe color on the top because it seems to go well with the flooring.