If you sit at a keyboard for multiple hours every day you should consider getting one of these: https://kinesis-ergo.com/shop/freestyle2-for-pc-us/
Scroll right in the picture carousel to the photo showing the two monitors. That is the configuration I use mine in.
I was developing ulnar neuropathy from typing something like twelve hours a day while working for a startup. I got this keyboard and started using it with the 15 degree tilt configuration, and the ulnar neuropathy cleared up in about a month.
Before that, typing for a couple hours would result in tingling and numbness along the pinkie side of both hands. After about a month, that stopped and never came back.
I’ve since left tech and no longer have crazy long time on the keyboard, and now I just use the keyboard on my macbook, without any issue.
For reference, I was in my late twenties when this occurred. I’m now in my 40s and I will say that the ulnar neuropathy never came back.
The one thing about that keyboard to be aware of: it’s BIG. Each half is nearly the size of a macbook air. So it can be a bit much to carry in a messenger bag. A decent backpack, doable. But it’s really best as a permanent desk fixture.
Sideways mouse is great too.