The last two jobs I was on had issues with kitchen plugs. Neither case was required by code... it just came down to the builder's specs.

The first was a kitchen island. We ended up putting plugs in the millwork just below the countertop on each end.

The second had only about a 4" stub wall on peninsula. Of course the wall wasn't that short on the drawings, but we had to mash in a plug, garb switch, and telephone plug - all sideways - in that little space.

The last thing I've heard of is plugs on the front face of the millwork just below the countertop. (Usually installed for the elderly or disabled.)