Hi Alex,
I just did a quick search on AVSIM using "Paul Hannity" in the search field and came up with this list
Aer Lingus Commuter, Aer Lingus Dot Com, British European, Eurowings - Lufthansa Regional,
Lufthansa Cityliner, Lufthansa Regional, Northwest Airlines, SN Brussels, Titan Airways & WDL Aviation.
That's just on AVSIM, I haven't looked on the other sites.
If you click on the Aircraft links "BAe 146" or "Avro ARJ" in the left margin here, you will find a link at the bottom of the page that gives you a list of repaints + modeller, the list above seems to be about it, for Pauls model.
There is of course Jon Murchisons newer model available over at Historic Jetliners Group
http://www.simviation.com/hjg/ , there you will find a very good selection of repaints of both old and new liveries.
Regards,
................Adrian W.