Yeh Bolivar and JDSM are on top of giant pedestals about 40-50 feet from each other leading into the 6th Ave entrance. FEDR and Nadal-like. Artigas is way downtown from them in a small, somewhat obscure little plaza and on relatively tiny pedestal. The Egg character.
Could Jose Marti be the Murray in this group? If you go into the park a little from the 6th Ave entrance Marti has very large equestrian statue like SB and JDSM.
Actually Bolivar, JDSM and Marti each with an equestrian statue on a giant granite pedestal at Central Park are more Big 3 and Murray is Artigas — downtown on a relatively tiny pedestal with no horse.