Miniature fruit trees were discovered as natural mutations of seedling trees and it took years of breeding to blend the genes for good taste and color with the genes for miniature size.
If you want a fruit tree that’s both short (under 2 meters) and sweet you could consider a genetic dwarf. The genetic dwarf (miniature) trees became available to gardeners in the last twenty years. In all it took 20 years to complete the first full cycle of breeding from a natural seedling mutation to a reliable miniature tree for sale at your local nursery.
PS: this fruit is interesting despite the aromas included that are not natural, and those aromas are pico-magnatum a winter truffle.