There's actually a statistical formula to figure this out but the problem is the leucistics. Theoretically a lucy is the end regardless of adding new genes. They can carry them but you won't see them so what's the point? That's where it gets complicated because they can be used in combos but you can't have two of them or it wipes everything out. Then you have the phantoms and mystics which create lucies with some but not with a mojave. And it can be argued that the super mojave and the ivories aren't the end since they are affected by additional genes. Enough to make even a statistician's head spin. Oh, and then co-doms count twice too. Just look at cinnies/pastels. There are 4 combos just using those two! This is something I've been wanting to plug into a formula but haven't had time yet.