But it was what we called in the beginning of the Gulf War THE Stealth Fighter.
However, that was the very first of them all. Every design grows in leaps ad bounds technology-wise.
The F-117 was the first.
Some visual differences:
F-117A
B-2
Navy's X-47B stealth drone
These three pictures show, in order, 1st, 2nd and 3rd generation stealth technology.
You'll note the photo of the Iranian drones look more like little B2's, which I believe are just models making them "appear" to be available for air missions.