A journey map for employees?

In UX design we often start with personas and journey maps to identify high and low points of a user's experience with our products. What about an employee's experience in an organization, from reading the job posting to greeting the front desk to promotions to exit and even to recommend (or not) this company afterwards? We carefully monitor the pipeline of potential customers in Sales, but how many companies ever think about its people coming and going and the cycle throughout?

If really, "people are our best assets" - which part of a company is studying an employee's entire experience? We assume it's HR, and there's even a team under HR (or more often, under facilities/office management) named "People Experience", but I feel it's scattered to siloed departments and initiatives, and hence many small things that matter are totally neglected. This design technique could be helpful.

I guess the essential ask is, can/should we treat our own people with the same level of attention as we deal with our customers? Or just, it's time to think about tools/techniques applied in attracting/retaining customers that can also benefit internal operations? Because, the relationship between individuals and organizations are shifting. For any organization, employees/contractors are now PARTNERS too.

From another perspective, is it possible to do things in the same ways externally and internally? It's tiring and ineffective for a person to wear multiple masks, the same goes with an organization?