Generally there is a light switch that turns on almost all the lights near the door. It can be near other switches or sometimes mounted by the radio or entertainment area but generally within about 2-3 steps of the door.
Turn all your lights on in the living area and then turn off your light switches to see which ones control what. Don't be surprised that there may be a few that are only turned on my themselfs individually.
2020 Chevrolet 2500 LTZ, 2019 Forest River Wolfpack 23Pack15, 2014 EZGO Golf Cart.