Far too many, most of those appear throughout the game, I just want things you can scan at only ONE point in the game and then NEVER AGAIN.

And I said bosses and mini-bosses aside, so they don't count.

For example, Samus' ship changes at a point in the game, but you can scan it any time before that, the things I am discussing appear in a single room at a single point and then never ever appear ever again.