My older dog would and still does now and again, try to push my button but was quite laid back.
My old bitch was litter of all bitches, the biggest most dominant out the litter and just a twat all her life.
My merle pup is laid back as well similar to the dog I have, maybe more alert. But any of them once there blood is up are keen. The pup I have at minute only 11week old, laid back n fairly calm but once he plays he means business and don't back down from older dog.
I think the calm pups make more biddable types tbh dai.