OEMConfig

I've noticed that the newest Nougat build for the WT6000 has added support for OEMConfig, which is exciting news.

But then I realized that the WT6000 only has AOSP versions of Android and my understanding was that OEMConfig was a management feature specific to GMS devices enrolled into an EMM like SOTI as an Android Enterprise device. Am I missing something here? Can you enroll AOSP device as a Managed Device with Device Owner or can you only use Device Administrator? What happens on Android Q and beyond when Device Admin becomes increasingly deprecated, will there even be AOSP device options any more?