Our garage houses both our RV and an enclosed trailer so there isn't much light coming down from above either of them. On each side of the garage I installed our lights as those areas are (for me) the optimum work and open spaces. On the ceiling down the middle of the garage, between our RV and the trailer are lights which seem to work well.
Our prior RV had a sun roof (dome) so over that I did have a light installed on the ceiling which helped with inside lights whenever we were in the RV prepping it.