Camera points straight ahead. Intention is to be objective.
camera points down from a higher angle.
High angle – camera points down from a higher angle.
camera points up from a lower angle.
Over the shoulder – not strictly an angle, but it's a specialized shot that deserves its own place.
An over the shoulder shot can be used to show a relationship between another persona and our subject. We take a position next to the main subject getting close-up in their space and viewing the world as if we were standing with them. We may connect our model with a physical item or another individual within their space. The over the shoulder position places us within the world of the documented subject.