I don't drive a RV, I just charge my campers batteries sometimes. I have 3 different connector cables from the common connectors I found in Switzerland, France and Italy only.
In my area according to Google maps I see J1772, CCS1, CCS2, Typ 2, CHAdeMO, NACS next to schuko (landline) (in Austria right now).
As said not all stations provide all the standards, not every station has CCS2, hence why I carry multiple cable adapters. That's all I know really. As said I don't drive an electric car.