Prior to Covid I noticed that our in-house purchasing guide had Dell WQHD 34" monitors so I purchased one each for my interns and they were a big hit. Turned out to be hugely useful both at their desks from the screen real estate (3440x1440) and using them for mid-year and year-end demos.
When my interns rolled off me and my employees naturally repurposed the monitors and within a couple of months everyone had gotten so used to them we had to have one at home for remote work days.
My desk is an old english game table that is 36" wide so two 20+" monitors is a little crowded. But one 34" monitor is perfect for me. Same idea: lots of screen real estate. The fact that everyone on the team has one with the same resolution at home makes screen sharing between us perfect. The other team members still have multi-monitor setups, so they can always screen share off of their second monitors when presenting to people with lower resolution displays. I have to scooch my browser to the far left and blow up to 150% before people can read anything. Minor downside, but still worth it.
Working from home was ugly until I bought a 4k monitor with a pair of smaller ones to go each side. I initially thought I could get by with the 2.5k monitor and a single secondary one but ... yeah, nah. 4k is surprisingly easier to read, and having two secondary monitors surprisingly useful. It means I can have all the distractions on one side (messaging, email, other messaging... why are there so many messaging apps?), the main monitor for the primary task, and the other secondary for reference. I still swap documents/tabs a lot, but having the main reference always right there makes it much easier.
Often that's the design document, with the IDE occupying the whole 4k monitor. Two code windows + helper windows, it's not just 500 character lines :)
They're all 24" @ 1929x1200.
It's magical, I can keep so many things open at the same time with a reasonable window size.
The integrated intel graphics can drive all three of them, but I wasn't able to also drive the laptop display, that would have been perfect.