would multiple genetically cloned humans really have varying personalities if they were all cloned from the same person as they do in Star Wars?
you cannot 100% control environmental influences which heaily influence personality. even if you tried your best to build 2 perfectly identical chambers and locked in 2 clones for a certain amount of time, they might still develop different personalities because the ceiling light in room 1 has a 1nm shift in wavelength compared to room 2 or the air has 0,1% more oxygen in room 2.
It depends on the variation in the environment they were raised in compared to one-another.
The clones in Star Wars were specifically varied during the creation process with the explicit purpose of producing some more capable than others.