can't speak about Raven (I really don't care for it) but the McKenzie works a lot like enchi. With the super form being near desert in color and pattern. Personally I think once it becomes more available it will be big but that's just my humble opinion
I saw a pic of the McKenzie and yeah, it looks a lot like an Enchi.
I believe they are actual morphs. Raven being dominant and McKensie being co-dom. I have not worked with either and this is just information I have read in passing. Raven is on world of ball pythons.
I just wanted to throw this out there... I'm 90% sure the raven is actually a co dominate gene with the super form being near identical to a super chocolate. I don't really want to do the digging but there are pictures on Facebook of either a super raven itself or a chocolate raven and it looks near identical to a super chocolate... Take away from that what you want. I think the Mckenzie stuff has some potential in the future especially once the price comes down a bit. I can't wait to see some more combos