As far as "assault weapon" (whatever that means as assault is an action not an item) you are correct in mini 14/30 as well as m1a, m1 garand, m1 carbine etc not being classified as such.
An ar style or ak style or any of the "evil" rifles may be configured in what is referred to as "featureless". They are called this as you are removing the features California considers makes a gun more dangerous or scary such as pistol grips, flash hider, forward grips, collapsible or folding stocks ect. According to CA adding any one of these features to a gun with a detachable magazine makes you an evil "assault weapon" criminal set to destroy the entire world.
For example - take a mini 14 and put a forward grip on it, this in the eyes of California makes you a assault weapon welding terrorist. If you had a mini 14 and put a flash suppressor on it you're a terrorist. However take this flash suppressor off of the gun (which dose not effect the profamanc, handling, accuracy, ability to use or shoot the firearm or really anything and you are no longer a terrorist and that firearm can no longer hurt anyone even though it's the same firearm.
Now back to the featureless build take an AR 15 with a bullet button as to be legal as of right now as to make the magazine difficult to change rapidly without a tool.
You either pin the collapsible stock in a fixed position (wherever you want it to be) or replace it with a fixed stock.
You add a grip wrap (a piece of plastic that just does not allow the Web of your hand to wrap around the grip and your thumb and fingers to touch) or delete the pistol grip
Then if equipped remove the flash hider
And magic you can take the bullet button off have a standard mag release and have the same gun with the same or greater (due to the standard mag release allowing for quick reloads) effectiveness and your A O K with the state you do not have a scary or evil rifle and are not a terrorist even though you have the same gun.
This also applies to AKs and the rest of rifles - fixed stock, grip wrap, no muzzle device (flash hider) and bam you can have an AK 47 no bullet button, not scary, not a terrorist even though it's the same gun.
As far as RAW (registered assault weapon) currently the way things are set up with these laws it would become a type 3 RAW meaning yes no bullet button and you can have all the "scary" features pistol grip collapsible stock flash hider ect
Sorry for the long post hoe it helps some