Webcams are for individual desks and the small spaces a video bar would be wasted on - a two-person huddle room, a director's office, a reception desk that takes video calls.
Almost any current webcam beats a laptop's built-in camera, mostly because of where it sits rather than what is in it. A laptop camera looks up at the ceiling and at the underside of a face; a webcam on top of a monitor is at eye level. That change does more for how somebody comes across than any sensor specification.
Field of view is the real choice. A narrow lens frames one person cleanly and is right for a desk. A wide lens takes in two or three people and the room behind them, which is right for a huddle space and wrong for an office where it will show the whole room to the call.
Light beats resolution every time. A 4K camera facing a window renders a silhouette, and a 1080p camera with a lamp in front of the subject looks better than either. Where video quality matters - recorded training, external-facing calls - spend the difference on lighting rather than on the camera.
Quoted individually or by the floor. Tell us how many desks and whether they are open-plan.