Frank virtually any mango can be dwarfed. There are dwarf mangoes like Falan or moderate growth like Irwin, and others. Still Irwin is not good as a rootstock. I am testing Falan seedlings and see progress under cold and containers, ask me from time to time.
It's about the method of dwarfing the roots, such as trimming the tap root at the right time and promote adventitious root, but I tell you in your zone mangoes are difficult to grow in the first 3-4 years.