Which Indian cultivar has potential be a commercial success in US market considering flavour, size , shelf life of fruit?
Propagating 15 Indian Cultivars so far and watched them closely in South Florida conditions for last few years, my take would be Amrapalli and Kesar. They're way superior than the Ataulfo mangos in flavor profile found in American Supermarkets from Mexico, in the same size spectrum.
Kesar could be replaced with Jumbo Kesar for the size aspect, otherwise Kesar and jumbo kesar have the same Flavor profile.
These two cultivars are productive, manifest slow growth habit which leads to have a manageable tree, good to very good disease resistance, didn't suffer any MBBS in last couple of years. They do have a very good shelf life. Sonpari(not a commercial variety in India) could have been a good contender in every dept. except for disease resistance if it didn't have Mango bacterial black spot here in South Florida. I'll follow up on Sonpari.
I do have few Indian commercial varieties like Himsagar and langra which yet to enter this platform. Time will say what they put together. Please check my other thread for the success rate of Indian Cultivars in South Florida. They could exhibit better results elsewhere in US.