Grover Cleveland started his career as an American lawyer, before "graduating" to becoming the 22nd and 24th President of the United States. That is right - after he was done with his first term, he only got elected after another person was elected as US president, which is why he can claim to be both the 22nd and 24th President of the United States. No other president achieved this.
He is the only president known to not serve two consecutive terms, something that hasn't even happened in the 20th and 21st century. He was the leader of the pro-business Bourbon Democrats group and worked hard to oppose high trading tariffs, inflation, imperialism and the giving of subsidies to farmers and businesses. He believed the state needed to minimize its effect on the local economy.