Doubtful Lineanage of Yellowbelly

[JAMills]

I'm generally horrible at recognizing YBs, but for some reason I seem to have more luck looking at the dorsal than at the belly. Those look like YBs to me.

Those both look like YB's to me

We do need to see the belly, but from the top they look like YB

I will agree with everyone. They do look like YB from the top to me also. I don't know how to explain it but the sides are what really say YB to me. Belly shots would be helpful but I see your post that you do not have the snakes.
As for the Dorsal blushing you refer to, not neccesary to be YB. YB vary greatly. And here is a pic of my guy just to throw that in there for ya.
Notice the Similarity of the "Flames" on the sides with the animals you are questioning