Very few OEM wheels for the LX/LC are forged. The first gen had the Alcoa SRT 20x9 which even had "forged" stamped on them!
The only 20x8 wheel that I think was forged was the polished classic wheel that you could get on Challengers and Chargers, all other 20x8 wheels are cast.
As others have said the 20x9.5 wheels were forged (Hellcat, Daytona 392 some years, SRT 392) and the WRT 20x9 wheels were also forged.
OEM wheels from any manufacturer are expensive usually over $800 they are also made to a lot better standards then aftermarket wheels. I love using OEM wheels for my winter set as I know they'll be durable.