This question asks what the difference is between configuration and developer sandboxes, but I want to know which sandbox types are configuration-only. In no documentation are certain types called out as configuration-only.
I need to know because these release notes say custom settings data is now copied to Developer and Configuration Only sandboxes, and we're about to refresh a partial-copy sandbox.
If custom settings are going to be copied, my task is to write a refresh script that reloads the sandbox's custom-settings data over and against production's. If not, then I obviously don't need to bother.