Nice work ... neat and simple ... the best kind of carpentry and woodworking.
But this just gave me an idea because of how you are arranging the cutlery ... spoons / forks one way ... then another stack facing the other way to use up all the available space.
Why not design dividers on a slight angle like ....
| \ / \ / \ / \ / |
... then you could space the dividers a bit closer for each type of cutlery and leave room to keep them all divided .... and of course leave one or two rows for regular knives that don't need an angled division