If you are applying for an ATP-MEL, the ATP-CTP is required to sit the relevant Knowledge Test.
If you take the checkride in the Sim, there are two options, depending on the school. I've seen the ATP offered with or without the type rating on the B737. This would be similar for the A320.
If you have sufficient hours on type, the approved course would typically only be 2 sessions plus a checkride. It makes sense to include the T/R.
Under FAA, the grant of a type rating also gives MEL...
... but not SEL privileges. There is also no effective credit for that additional checkride, which mostly consists of an Instrument checkride, on one engine - but none inoperative.
Good luck.