hey...I have an uncompleted theory
alot of LOL champions names before released is so different from the current name .....
it's because of Dota2+lore of league also ......but Dota comes as first reason......I can't explain it all but there is to many champions for example (wukong) he was already released in 2011 in lol and (monkey King) he released in 2010 in worcraft (Dota2)...thay can't name the same champion alike ...and also Warwick if u seriously search...his name was about to be (lifestyler) but there was already a champ in Dota2 called that name so yah ...the developer's had to be creative so thay made the "lore of league of legends" so thay can name there champions there special names tho