I’ve lived here for the past 25 years. They sell tee shirts that show 4 different pronunciations. But I can assure you: the people who live here now predominantly say “Loo ah vull”. Like you have a mouthful of marbles. Lol
I definitely agree with that.
I’d imagine “New Orleans” started off as actual English and was bastardized over time to what it is now ; NAW-LUNS.