Some like to use 42" cabinets, or 42 and add coffer ceilings to break it up the height, some people like to go with stacked cabinets, 42/15" to get rid of some of the wall space above, some will use 36" and put some sort of plate display on top...

Thank you

I love them to go to the ceiling with glass cabinets at the top to keep it from feeling like wall that is going to come down on you light the glass cabinets with some colorful glass pieces to me you can never have enough storage in a kitchen and the space above cabinets that don’t go to the ceiling is just another space that collects dust