Hello Godsevil!
Welcome to the most lovely sl hobby there is! (is the most addictive too but shhh, don't tell anyone I told you!)
It seems like you have some pretty neat Special Edition Halloween kitties! However, as Nenya posted before, the traits you see in both parents and on their first born baby are "costumes". These are special traits the KittyCats Team has given to your cats to show but are not necessarily the real traits your kitties carry.
Your starter kitties (each one of the mummies you mentioned or any other kitty you own that show their parents as "STARTER" when you check their stats) will have hidden traits behind the Genesis traits you can see in the pedigree page but they might not be the same traits they show on their costume; Some of them traits could be the same though, or if you are very very very lucky you might have them all hiding but traits are assigned to each kitten box in the moment is rezzed and this process is completely random, so the only way to know which are the real traits your kitties are hiding is to breed them with cats already showing some traits and see what comes up
I hope this explanation shed some light in the subject! If you have any questions feel free to post them here, the KittyCats Community is extremely helpful!
Love... Giulia