Once upon a time, I thought all VFT flowers looked alike. Then I saw Ed Read's photo of a "Wacky Traps"
and I started looking more closely.
This year, I decided to check out as many flowers of VFT cultivars and clones as I could find. My plants are just now starting to flower. Here is a start. If you have photos to add, please do so.
Dionaea 'Cupped Trap' (S.Stewart)
This flower looks "typical" to me.