The editing AR interface (example release group) currently looks like this:

release group: <current release group>
type: <drop-down for current entity type>
<entity type drop-down> <entity text field>
...

This might make sense in terms of how it looks like, but when reading from top to bottom the order of operation doesn't make sense. When you change then entity type for example from "Place" to "Series" the type drop-down above changes completely.
On the other hand you don't find your AR type when you didn't select the correct entity yet.

I propose this order:

release group: <current release group>
<entity type drop-down> <entity text field>
type: <drop-down for current entity type>