can someone describe the general behaviour/characteristic of all three species of dwarf hasmters?

General characteristics and behaviors re much the same with ll hamsters.
The dwarf personality is more skittish and quicker, the Robo hamster perhaps takes the most patience.
They will all tame,train, and bond with their keepers, if you understand these little animals. A learning curve for both of you. In the end, a wonderful little animal that will love you in return.
Much your call which one, when you see the one that makes eye contact and and you feel that connection, that is the one you get.