I use a Ultrawide as my main monitor, a 1440p vertical one on the right and 2 portable 15" 1080p under the Ultrawide.

When I need to share, I share one of the 15". I keep my notes and the call on my Ultrawide. I think it's a great setup.

But if you don't want as many monitors, for sure 2x 16:9 is much better than 1x 21:9 or even 1x 32:9.