Stand where the work happens
A fitting behind the person at the bench can leave their own shadow on the work. Start with the preparation surface and the position of the person using it, rather than the centreline of the room.
Check the sink, hob and other work areas individually. A single symmetrical arrangement rarely answers every task equally well.
Let the layers carry different jobs
Under-cabinet light can serve a bench. A pendant can relate to an island or table. General light supports movement and cleaning. Each needs to be placed so it avoids irritating reflections and glare.
Think about the kitchen from the adjoining room too. The same bright task setting that works while cooking may dominate the living space afterwards.
Control the change of pace
I group lights around activities. The practical preparation layer should be easy to reach, and a softer setting should not require a tour of several switches.
Try the materials under the intended sources before ordering. Shiny splashbacks and pale worktops can make a light behave quite differently from its shop demonstration.