DesignOps in organizations with high levels of UX maturity

Now that we have moved on from ResearchOps to encompass the entire design process (DesignOps), is this a function that has been successfully implemented in what I assume would be very UX mature organizations?

I am interested to find out how mature design organizations have been able to operationalize their design process to integrate and work with the business and software development arms of the organization, or if this is just a concept that is being described as the next step/trend for design-led/driven organizations.

Has anyone come across organizations that have a DesignOps function? Where does it sit within the organization hierarchy and how are the teams and roles defined?