Tools to find duplicate domains

I found a bunch of completely duplicate sites of one of my clients in GSC coverage, which was showing upas

"Duplicate, Google chose different canonical than user"

As I can't export this data from GSC, there are 1000s of pages I would need to manually check.

Is there any tools that will do this at bulk? I tried siteliner but with the free version it picked up 0, so bit hesitant to upgrade to premium if it won't find any.