Generally agree with your sentiments, with one correction: Scheduling/Revenue apps came first (Cadence was the first app to go live in 1983) with clinical apps launching in the 90s (Ambulatory in 1992 and Inpatient in 1998).

Source: staff meetings (former Epic IS) and this old article: https://isthmus.com/news/cover-story/epic-systems-an-epic-ti...