So there are some morphs that are the same but came from different breeders (Banana & Coral Glow) and there are different morphs with the same name (Axanthic (MJ), Axanthic (TSK) & Axanthic (VPI)).
What others are like this?
And does anyone have any links/studies/information proof that these are the same/different gene?
Edit: I’m gonna list them below to make this easier.
Banana = Coral Glow
Butter = Lesser
Sugar = Calico
Sugar and calico are the same thing but just different lines as well as butter and lesser. You can find a fair amount of info about both of them being the same
OWAL Reptiles has a running list on his website. And I believe there is even a thread here as well that covers it too.
Mota = Lucifer = Sauce = LemonBack = DesertLemon
Sulfur = Ember
Candy = Toffee
Ultramel = Burgundy
DesertGhost = Enhancer = Sahara
Nice one 
I’ll get searching now.
Edit: I think I found it…
Yep, that is the one
prob going to be shunned but monarch and ultramel 
Monarch is just a little cleaner IMO
Has this actually been proven? I know it is suspected (and I agree it is not unlikely) but I have not yet seen anyone actually breed the two lines together
I haven’t either. I have no proof but that’s just my opinion. They are visually very similar so I don’t get the crazy price difference.