I figured it out this evening. The circled one is the front and back lights in the coach, middle switch are the skylight lights, and rightmost is the back left sewer light. I must have turned the individual lights off, then confused myself - which these days isn't hard to do!
2017 RAM 3500 SRW Laramie Crew Cab Long Bed w/6.7 CTD & Aisin
2015 Eagle 284BHBE Premier