The thriving convents tend to be the newer ones.
This short list is a start.
Please share it so that young Catholic women can visit and stay in at least one convent. It is an important experience.
Norbertine Canoneses of Bethlehem Priory of St. Joseph (http://norbertinesisters.org/)
Carmelite Monastery of the Infant of Prague (https://carmeloftraversecity.org/);
Benedictines of Mary, Queen of the Apostles (https://carmelitesistersocd.com/);
Carmelite Sisters of the Most Sacred Heart of Los Angeles (https://carmelitesistersocd.com/);
Dominican Sisters of Mary Mother of the Eucharist (https://www.sistersofmary.org/);
Religious Sisters of Mercy (http://www.rsmofalma.org/);
Poor Clares of Perpetual Adoration (http://olamnuns.com/);
Abbey of Regina Laudis (http://abbeyofreginalaudis.org/);
Sisters of Mary, Mother of the Church (https://sistersofmarymc.org/);
Sisters of Life (http://www.sistersoflife.org/);
Franciscan Sisters of the Eucharist (http://www.fsecommunity.org/);
Dominican Sisters of St. Cecilia (http://www.nashvilledominican.org/);