I just use my imac camera it’s pretty good or use the portfolio case and then use my ipad’s camera.

I use my phone on a gooseneck/adjustable clamp as my camera either behind and off to the side or behind with just the camera peeking over the top edge of my monitor and join the meeting a second time from my computer with no mic/speakers on. This also means I can pause to use NVDA for files shared in the meeting or to take in meeting sidebar chats without breaking my brain since the audio streams are coming from two different devices with physical mute buttons. (I use in ear Bluetooth earbuds with built in mic and without noise blocking for meeting audio and over ear wired headphones for my computer). Depending on the context, I sometimes let organizers know in advance I need to join from two devices since it sometimes throws other people for a loop to see two attendee tiles for the same person.

Like you, I put my webcam on a second monitor. That monitor is just sitting on a side table, not mounted on an arm, so the angle is a kind of odd (it's basically side-on). If I'm doing a video chat with someone, I'll put the chat window on the second monitor so that I can just sit facing that direction. Makes it harder to see them, but I don't generally need.to see them that much if it's just a video chat. For work meetings where I actually need to see the screen, I just don't turn on my webcam. It actually works out fine because most of my coworkers don't turn their cameras on either.

I use two screens! One where the webcam is mounted and my other screen that i can get all of my accessibility mess on

I have my webcam on a shelf behind a monitor.

I have a similar setup, with the camera on a gooseneck or whatever those things are called. The angle is a bit weird, but I haven't found anything else.