The standardization of BIM practices in German-speaking countries is still largely in its infancy. Internationally, however, there are hundreds of different BIM standards.
You can find an overview of interesting international BIM standards here.
Overview of relevant standards and standardization projects in German-speaking countries:
In Austria, ÖN 6241 was published on July 15, 2015. More detailed information here...
In Germany, the VDI is responsible for standardizing BIM workflows. An initial document was published in January 2017, but the majority of the standards are still under development.
Further information is available on the VDI website.
In Switzerland, standardization is being developed by the Swiss Society of Engineers and Architects (SIA).
Further information is available on the SIA website.
The article "Overview of BIM Terms" provides a list of the most common BIM-related terms, as well as a downloadable checklist of these terms.