Just in case you missed it... there IS a slide switch just to the right of the 2 front/center dome lights that will turn them(those 2 front/center) OFF and they will no illuminate when doors are opened.
The rest of the dome/map lights will always turn on when doors are opened.
I, on the other hand, am searching for a way to turn on all of the cabin lights without having to open a door. Does anyone know of a way to do this? All of my previous cars had a way to do this with the instrument brightness control, but that isn't so with my 2019 Ascent.