As other have said the AS match maybor may not work due to the pending merger.

AB will not match AA platinum Im afraid. AB only matches NON OW alliance programs abd they also require a flight with AB from US reside us anyways. You cab allways match to another program from AA then match to AB if such offers come about. Or trade for a partner card on coupon connection.

I thought RJ required some flights on their metal for status? I do know they match too if you have a flight with them but again that does not work with OW programs Im sure...

The changing times mean alot of people are looking for new FFP homes but like many (Myself included) they change just to find the new program is chabging too

Good luck OP hope this helps a little.