NEC 210.70 requires a lighting outlet controled by a switch (wall mounted or self-contained) by.near equipment requiring servicing. Panels fall under that definition.
Exact locations, or 'more than one' are not within the referenced Article, no matter how you read it.
Code aside, 'adequate' lighting is installed on new comm jobs, a few memorable electric rooms were 'brain surgery' lit. When renovation time comes for the older dungeons, the lite will shine.
