Hey guys,
I was able to fix the issue after some extra research. The conversions must've corrupted the file in some way that i have no clue about.
I did find a tutorial on how to make sound packs which was sort of a last resort as somehow, none of the other options or suggestions worked.
Since the skin in question (Narkina 5 prisoner) was a simple reskinned default model i didn't need any other emotes beside the "ONE WAY OUT" chant so just copied the base file into diffent voice lines: taunt, gloat1 and victory1, and simply group transformed them as said in above tutorial.
That seemed to have done the trick as it works perfectly now.
Thank you guys so much for the help though! Really appreciate it! 😄
Showersinging's post in Taunt creating issue was marked as the answer