There's a whole world of video cameras you can use for live streaming. Unlike other video cameras, PTZ (pan-tilt-zoom) cameras attach to a wall, ceiling, or other fixed location. They're operated via remote and don't sit on tripods or require a cameraperson.
PTZ cameras are great for capturing a wide shot of a room or a tough angle while allowing for zoom. They can be used for anything from an easy one-camera, hands-off setup to a highly produced multi-cam scenario where the production crew controls the cameras from a studio. They're particularly helpful when you don't have a large team to operate a stream.