My wife is Italian and we almost never eat at Italian restaurants. The ones that would meet her standards do not match our pocket books. Also, a lot of Italian recipes have bechamel sauce hidden in them, which is butter.
Do you have a recommendation in LA (Westside or South Bay) for a good Napoli style pizzeria? Again my wife is really picky. Won't touch American pizza unless desparate. We finally found one in Marina Del Rey that was run by a Napoiitano D.O.C. Then he returned to Italy.
I wouldn't eat any "creamy" sauce at an Italian restaurant. That's not Italian AFAIK, it's Italian-American (Alfredo is not Italian). Cacio e Pepe *may* have some butter, but that's about it. Or maybe truffle-butter (not that kind you sickos) with ravioli or agnolotti.
Not sure how far east you are willing to go but off the top of my head, westside-ish:
*Pizzana (Brentwood)
*Milo & Olive (Santa Monica)
*Double Zero (Venice)
Eataly (Century City)
Jon & Vinny's (Brentwood)
North Italia (Santa Monica)
*Roberta's (Culver City)
Felix (Venice/SM)
*Nerano (Beverly Hills)
*=Favorites
If you get to Hollywood ever,
L'Antica Pizzeria Da Michele is the best pizza in LA, IMHO. The owners are from Naples area. It's fucking great.
Don't now anything about Italian in South Bay, sorry.