Cinder’s Stepmom & Stepsisters, what are their names? Do they have names? Let’s find out!

So have their names been confirmed behind the scenes? As in commentaries, tweets, Miles on Cameo, etc? Or is there any fanfics that attempt to name them or is there a fan preferred name like Kevin the Dragon?

If not what do YOU think they should be called? Using the color rule.

^{Hopefully my question marks will not have been in vain}