About the pronunciation:
I'm not gonna check the transcription but it seems to be okay ([ˈkɪjiu̯]).
Audio from wiki is also correct but it's hard to percept from this super short audio :)
Found the nice video with this topic:
https://www.youtube.com/watch?v=cE1f6GUvG5Y
Girl's pronunciation is accurate with great comments for English speakers.
The mess in the wiki should be fixed in the short perspective, the Ministry of Culture is bombing with the requests from public organizations leave only Kyiv.
And they promise to solve this last few months. We'll see.
Do these dialects all pronounce the city's name
roughly the same, or are there significant variants?
Yeap,
pronunciation
is roughly the same in the common.
But in deep villages you may to hear Кійов, Кіїв or even Кійув (Polissian) from old folks (and people from these villages and countries).
I can't write a proper transcription for this, sorry.
If your software application is exposing the
string "Europe/Kiev" to users who prefer a different name, please send
bug reports mentioning CLDR to the application's developers.
Sure I did it many times but application support often says that it's nothing they can do because the timezone name comes from the library their application uses.
And library devs say they took timezone names from sources that lay deeper.
So we can see things like this: in the different corners of the internet services.