There was NO STAGED FLAG RAISING on Iwo Jima.
Originally, a small flag was put up, but it couldn't be seen because of its size. A second larger flag was sent up, and the raising of that flag was the one that created the iconic image that is memorialized in the statue in Arlington.
After the flag was up, the photographer who snapped the historic image asked those Marines who participated in the raising to pose in front of the flag. When later asked about whether the photo was staged, he said yes, thinking they were asking about the posed group picture.
3 of the Marines who are shonw raising the second flag later died on Iwo Jima.