When companies created design systems, it is typically applied to their products and services rather than something that can be used throughout the entire organisations. Atlassian's update of their design system is a reflection of companies that are now doing 'digital first' but also recognize the need to standardize the branding that covers not just their digital products but even areas such as corporate communications.
No doubt it is easier for companies like Google that started out as a digital company and now venturing into hardware to consider this, but companies that traditionally work on hardware like Apple that have moved also into software will also have something like this. However, this seems to be typically the domain of companies that are large enough to dedicate resources and effort to creating design systems of this nature.
Other than Google's Material Design, Windows Fluent Design and Apple's HIG, are there other examples well-known brands with published design systems that cover both physical and digital design?