Latest Steam hardware survey, resolution results seem off?

https://lazysoci.al/post/4762143

Latest Steam hardware survey, resolution results seem off? - lazysoci.al

3840x1080 at 60%? 1920x1080 not in the list? I’d of expected that to be the most popular.

The 60/20 of two 1080p and two 1440p seems right, but how is there another 50% of “other”?
Probably can’t resolve monitors with distinct resolutions into one large one. How would a 2160p and a 1440p setup be displayed in this list?
That makes sense, but if 50% of setups are that way, shouldn’t the rest also only add up to 50%? There’s around 150% listed here