Chinese/african??

[kimdodge2015]

I bought an assortment of geese, I'm having some trouble identifying if these are a knobbed breed like Chinese or african or not, like toulouse. I'm having a hard time deciding if where the beak meets fluff is straight or curves up
So do you think these are knob breeds?
Or are they not knob breeds?

 

[oldhenlikesdogs]

They looked knobbed to me. A side picture would help to see better, but they are the right color for an African or chinese.