Tokubetsu Jōnin

are ninja who, rather than having all-around jōnin skills, only excel in a specific area, much like warrant officers in real-world militaries. For example, Ibiki Morino can completely understand the workings of the human mind, making him an expert in interrogation. They nevertheless possess enough skill overall, as they have been known to given the same opportunity as jōnin in leading their own genin teams. Ebisu lead Konohamaru's team, while Ibiki was called in during the New Era to replace Team 40's injured leader.

Trivia

 * In Naruto: Rise of a Ninja, tokubetsu jōnin are called elite shinobi.
 * Anko Mitarashi also holds this rank, but it's unknown what field of expertise she's in. Though it's possible she specializes in espionage and assassinations.