St. Teresa of Avila was declared a Doctor of the Church in 1970.
Reformed Anglican Catholic Church was created in 2004.
Reformed Catholic Church - Venezuela - was created in 2008.
Reformed Liberal Catholic Church was created in 1999.
The Catholic Church is perpetually in a state of reform & renewal. Or, possibly the term: reformed catholic church is an indirect reference to the Protestant Reformation since the term: catholic church is not capitalized?
They use the Old Catholic Church, the Catholic Church, and the Swiss Reformed Church.
Vatican II.
The Reformed Church is Protestant, I believe.
St. Teresa of Ávila was a reformer in the Catholic Church. She was a nun in the Carmelite order.
United Reformed
There have been untold leaders that have reformed the Catholic Church in the past 2,000 years. The very nature of the Church is to be reformed as it is composed entirely of sinners (saving Our Blessed Lord, and His Mother). So to get a specific answer to your question, you are going to have to narrow it down to a time period, and perhaps a country.
There were a few things that the catholic church reformed. One of the main things they did were created new religious orders.
Church of England. The Church of England understands itself to be both Catholic and Reformed.