accessible jQuery UI autocomplete that functions like jQuery mobile listview or filterable widget?

accessible jQuery UI autocomplete that functions like jQuery mobile listview or filterable widget?

I'm creating a filter functionality for a search results page that must be accessible (WCAG 2.0 Level AA) and mobile friendly.  I can see there are accessibility considerations for jQuery UI's autocomplete widget , however I'm looking for the options list to always be visible, much like jQuery mobile's filterable and listview widgets.

Can anyone either suggest an accessible extension of the jQuery UI autocomplete that will achieve this?

I'd like to progressively enhance a select box (so that without js this is the default) and I'd like the enhancement to allow the user to select an option from an always visible, filterable list.  

I've also looked at plugins like chosen.js and select2 and while the latter seems promising, I don't see the ability to have options remain visible and not just upon focus.

Any thoughts, links, or help is appreciated.