So, you're looking for game emulators with native TV output? I don't know of any, particularly not of JB-only ones. However, why don't you just use screen mirroring?
Or, alternatively, are you looking for emulators with remote control capabilities? This setup, as long as you don't use a Bluetooth controller, would require two iOS devices. The one functioning as the controller can be an old one like even an iPhone 3G or an old iPod touch.
So, you have one device and you have an AirPlay mirroring-capable (that is, A5+-based) device? Then, all current game & console emulators will work.
Note that, however, wireless AirPlay is just too slow for action games. You'll want to prefer wired TV out, preferably on a pre-Lightning device (the Lightning-based hdmi / VGA adapters also have some lag, albeit not as bad as wireless AirPlay.)