The Los Angeles Rams will get a chance to play in their home stadium for Super Bowl LVI, but they will still be considered the "road" team against the Cincinnati Bengals.
As Ian Rapoport of NFL Network noted, the NFL alternates the home designation between the AFC and NFC each year, regardless of where the game is being played. The NFC champion Tampa Bay Buccaneers were the home team last year in their win against the Kansas City Chiefs, which coincidentally took place in their own Raymond James Stadium.
It was the first time a team ever played the Super Bowl in its home stadium, a feat that will now be replicated by the Rams in SoFi Stadium.