Here is a smart monitor designed specifically for video conferencing. The HP ProDisplay P222c Monitor comes with a HD webcam, microphone, and speakers built-in. The monitor is certified for Skype for Business. It has a 21.5″ display with 178-degree viewing angles.
The monitor has audio, USB, DisplayPort, and VGA connectors. It is security lock-ready. You get to control your calls right at the display. More information is available here.