Reply #2: Oh wait, to answer your question...

[Bucky]

I'd put my money on Chet Arthur. He passed a lot of needed reforms, altho he did so out of political necessity. He was a famous graftsman and the guy before him was murdered in order to protect the graft system. He was slightly less malicious toward the rights of Indians than his contemporaries, too.

Grover Cleveland tends to get better marks than most in this Big Boss era, too, and certainly has a better track record over all, compared to Arthur, but he had fewer entrenched interests to stand against in championing his reforms.