for that matter, Pleistocene rewilding in general
Incidentally, one of the most successful examples of PRW is the Chernobyl Exclusion Zone. Which is notable because it was completely involuntary. They later introduced wisent and Przewalski horse in the 90s so the place just needs the aurochs to be back in the early Holocene. Saw once a crazy Ukrainian's website who clamored for leopards, tigers, rhinos and elephants.
I remember water buffaloes have been suggested for reintroduction in European wetlands. They could have been introduced for farming in Africa and the Americas, as well, as they have in Australia.