What other car engines (make, model and year ) can i swap for my 05 engine?

What is your question?

It is knocking. It was driven to long with little to no oil in it. The knocking gets louder when you push on the gas. Its a 2.0 LS

What makes this problem better or worse?

Nothing, its blown

How long has your 2005 Chevrolet Cobalt had this problem?

2 months