My Grandmother had a beautiful rock garden that only included rocks. She would have never even thought of putting plants in her ''rock garden'' although she had some beautiful flower gardens.
I have been watching this forum from onset and it appears that almost all the rock gardens here do not represent the one category(alpine) you have mentioned.
I think there is plenty of room for ALL types of gardeners and gardens here at ATP.
My rock garden consists of the plants that will grow in a pile of river rock and fieldstones the previous owners left and I have neither the time nor energy to remove the stones so I made a garden among them.
Dirt, your photos are beautiful and I have been inspired by your garden
Keep on posting