What camera? What other capture apps?
I doubt it's OBS, as it simply shows what it gets. It doesn't add anything. If there's some communication between app and camera to remove it, then that could explain what you see, as OBS doesn't do that either. If that's the case, then I'd consider it a crappy camera, and the manufacturers are trying to lock you into their brand and their affiliated partners. Maybe there's a manual setting *on the camera* to turn that stuff off, like my camcorder does?
OBS does, however, control a PTZ camera...sometimes. (motorized pan/tilt/zoom) It depends on the camera and the operating system. I found that out when I built a live presentation in OBS and put my Linux laptop on a "media cart" to show it, in place of the Windows laptop that normally lives there. Same PTZ camera on USB: OBS on Windows just treated it as a webcam, OBS on Linux treated it as a controllable PTZ.
So that might be a possibility for you as well: a proprietary app may be needed to control it on your preferred system, but a different system just picks it up and uses it.