Are aren't able to alter the sorting - it's in alphabetical order.
The names of the entities represented in the quick create bar should be tied to their main entity name - so if you'd have to change it there.
There isn't a supported way to inject JavaScript into the button itself for quick create. You could likely add JavaScript to the quick create form and use SOAP or REST to create an additional record when the original is saved.
Jason Lattimer
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