I think Anne Boleyn's has the widest range. In addition to both Lily Allen and Avril Lavigne, who's influence I heard from my first listen, there's also a lot of Katy Perry in that sound, and even some Megan Trainor (and I would pursue any four of them for said fantasy album).
Honestly, I'd love to hear Pink perform that one. The way the song progresses from pop to rock/punk at the end, it requires someone with an edgier sound than someone like Megan Trainor.
I feel this way about the West End cast, honestly! I'll admit I've seen nothing but the megasixes from the Chicago cast but the West End cast is absolutely fantastic and I cannot imagine anyone better than them, which is a shame because there's no way that cast ever ends up on Broadway (I'd love to see them again without having to fly to London).
In the few numbers I've seen of the West End cast, I think the Chicago cast sounded better vocally and put more personality into the characters. I was sort of deflated when I saw the West End Anne Boleyn after having seen the show in Chicago first. The actress in Chicago is HILARIOUS and sings the hell out of it, especially with some incredible riffing at the end.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian