Do macOS users actually use Edge or it's an error?
If you're parsing this info into the OS column, you should probably display this info in there at least with a note, or something like "Windows 10/11", "macOS 10.5 or newer"
So they only need what is a reasonable UA as of this week. They don't need what is the most popular one.
> The site updates weekly with data sourced from the server access logs of another site I run in order to give an accurate picture of the devices and browsers being used on the web.
If you only source data from one website, it is not an accurate picture by any means. Consider that other websites have different user bases. Your Firefox usage seems way too high for example, it's likely your other website is largely used by other technical people.