These are services that are also called 'critical care', 'ICU' etc. Intensive care are for patients with severe and life-threatening illnesses and injuries, which require constant, close monitoring and support from specialist equipment and medications in order to ensure normal bodily functions (Ref)
From patients point of view, the 'Urgent care' does not lead to overnight stay in the hospital. The experience is like going to a Doctor's office visit. (Ref) The main difference between traditional office visit and urgent care is a) no need for appointment, b) they will handle minor stuff like splinters, small wounds, acute infections, etc. that are not life-threatening emergencies.
In both Inpatient and Long Term Care, patient sleep in a healthcare facilities bed that is not 'home'. But the distinction between long-term vs short-term is not unambigious. How do we know that 'Skilled Nursing' was a long-term or short-term. When does a short-visit become long, 7 days, 30 days, 180 days, 365 days? Inpatient was thought to be the safest mapping.