General DiscussionChaos damage still exists?

3 type of SPELL damage
not of PHYSICAL damage.

without counting chaos damage, you would have 4 damages type without even have to think, so wtf with the 3 damages type:
cata --> siege
mele lane creep --> normal
range lane creep --> piercing
heroes --> heroes

Deathward, golem of warlock?, most ancient, most mele big neutrals, dunno if there are some more

thanks a lot bro i had it complicated in my mind :)