>Does anyone know, or could point me to a website stating the compatibility of the different pattern morphs? I'm talking about stripe, aztec, zigzag, banded, fading, etc. (not colour, only pattern)
>Like if you cross stripe with aztec, do you get stripes, aztecs, some weird combo, or just normal saddles het for something?
Aztec look to me as if it is a combination of Miami and zigzag, maybe with a bit of selection. But I've only seen pictures of both aztec and zigzag.
A few years ago, Jim Stelpfleug, of SW Wisconsin Reptiles, showed me a clutch of babies from a striped x motley mating. All the babies were roughly intermediate between the two patterns. So in my opinion striped and motley are compatible (alleles, in genetics jargon).
Don't know anything about banded. Or could that be what I've seen called "milk snake pattern"? I don't know anything about the genetics of milk snake pattern either. 
I've never heard of a pattern morph named fading. Unless it's the pattern mutant in blood red corns which is usually called "blood red".
In my opinion, only the genetics of motley and striped are well worked out. Zigzag and blood red (the pattern) are supposed to be recessive to normal, but I've seen posts that make me wonder how accurate those assessments are. And as I recall, McEachern's corn snake color an pattern booklet says that crossing motley and zigzag only produces normally patterned snakes. As to whether blood red (the pattern) is an allele of any other mutant, your guess is as good as mine.
Paul Hollander