Looking for paint color from lowes in ppg that is similar to Benjamin Moore edgecomb grey

I think it is your ceilings which need attention (unless it is the lighting). When I look at picture #1 the ceiling color is not the same as the walls and looks dingy; picture #2 the dining room ceiling and the living room ceiling are not the same, either. I don't mind the white, so suggest your repaint it all the same white in all the same finish...eggshell. As for the kitchen, the chosen white for cabinets in semi-gloss. Just a small detail...the front window arch which is stained paint it the wall white. It looks like an eyebrow with the wrong color pencil. Great house...congratulations. Splurge on new chandeliers.

Pick a color from your furnishings, either from your art, or an area rug, etc, and paint your accent wall that color. Its hard for anyone else to suggest a color, since we cant see any of those things in your pictures.

I totally disagree with the totally white pallet. It depends upon how much light you have in your rooms. If the room isn’t well lit, white can look drab. Trim and doors look nice in either Benjamin Moore White Dove (A creamy white) or Benjamin Moore Chantilly Lace (a brighter white). For neutral walls try Edgecomb Gray, Gray Owl, Pale Oak or Revere Pewter depending upon lighting- all Benjamin Moore. If you prefer Sherwin Williams, try Pure White for trim, Agreeable Gray or Creamy. How do I know this? I have three kids in their 30’s and I am also selling my house. They all liked my colors (Mostly White Dove and Revere Pewter) that they used those same colors in their own homes.