Woo!Ah! is super-weird! lol what even is with the !'s? Others from the top of my head:
Infinite - well, this one's more ironic, bc didn't they stop making music in like 2018?
The Boyz - I've gotten used to it, obvs, but when I first heard about them, I was like "Isn't that kind of ambiguous? WHAT boyz? Be specific!" lol
Elris - like Elvis with an R?
Dal Shabet - the way I say it (DAL-sha-bet) sounds like a toddler mispronouncing "alphabet" if I'm honest
(G)I-Dle - just spell it "Idol"; that's basically how it's pronounced!