just for kicks, I'm trying to think of all the routes these A330 birds have flown over the years, as a commemoration:
AA never operated the A330 MAN-ORD. It was just MAN-PHL as you say and that route rotated between the -200 and -300 over the years, though until the Boeings started being used in recent years it was predominantly the -200's once US Airways started taking delivery of them. As an aside, there was MAN-CLT that was on the 757, however that route didn't survive beyond summer 2014 when it was first launched and hasn't returned since. There have been other USA routes scrapped by AA and others that have fallen off the map from MAN over the years that would surely be higher priorities for bringing back once things start to improve.
MAN-ORD has been a mixture of 757, 767 and 787 in recent years, as well as going seasonal as the route declined and eventually axed long before COVID kicked off. Amazing how once upon a time this was supposedly one of AA's most profitable TATL routes, though times change and right up until pre-COVID there were more options available to those travelling TATL to/from MAN.
Right now, I'm just hoping the situation improves to a point where AA will resume MAN-PHL next year as planned.