It seems that the nature progression of the scope that is being covered by the HCI/UX design discipline has extended to "Human Experience Design", which appears to be encompassing not just experiences for users of an application or customer of a company's products and services but for all of humanity (as the term seems to imply).
The popularization of Service Design as a specialization involved broadening the lens of the UX scope from users interacting with an application to customers engaging with all of the company's products and services. It also involves understanding the underlying support processes and systems and requires putting on the business analyst's hat.
My guess is that Human Experience Design would involve investigating some of experiences that are not confined to the commercial or organisational environment, as suggested by some of the definitions provided.
Human experience looks beyond commercial needs to understand and meet human desires such as freedom, identity and creation.
However, this does not feel like it would involve new skills or processes, but may require more focus on issues such as inclusiveness and diversity in design, accessibility, AI, IoT and other emergent technologies.
What are the skills and processes (and artifacts?) associated with Human Experience Design specifically and not found in SD, CX or UX design?