I like the metaphor. An example archetype which extends your thought, with a twist, is that of an orphanage. I have seen many times the situation where the CIO role is absent, underpowered, or underfunded and the business community take to developing their own “IT shop” to support applications that they either build with Access or other EUC tool, or packages which are purchased on a credit card while at a trade show.
Each of these departmental “IT shops” will typically be a different level of maturity which corresponds to your archetypes (and typically at the more immature end of the scale).