I think it's the go to camera for most YouTubers etc.
It has a pretty clear picture and decent auto focus.
I'll note I actually have the 922 which to my knowledge is the same thing as the 920 but with a background removal tool that I don't use.

How far away do you plan on having the camera?
It has great resolution, but it's not so crazy good to work across the room.

I'd also say that the audio isn't so great. It's fine for a conference call but you'll probably want to look at a separate audio source or recording your commentary later and overlaying it.

Lastly, with the pandemic there really aren't any inexpensive cameras it there. I was just looking for one for my son and realized with everybody working from home there's a shortage of cameras in the market, so there's major price gouging going on. So honestly if you find a camera at normal price, just buy it.

You don't need more than a C920 and some good lighting for streaming.

The C922x can do 720p60, so it has a higher frame rate than the C920. It also has a better low light sensor, so if you don't have good lighting, it won't be a blocky mess.

The C920s is just the C920 really, don't bother with this.

If you can spend the extra money or can find a C922x on sale, then the 720p60 would be better (sorta) for streaming than the C920.......only for the frame rate.

.....all those numbers, my god...

TLDR: The C920 is perfectly fine for streaming. Support it with good LED lights. If you find the C922 for comparable prices, then buy that one instead.