People get really confused about that term "creole".
I grew up in South La. and currently live in New Orleans.
About 95% of people who consider themselves creole are catholic,
Just because you are fair in complexion you are not considered creole, I know a lot of darker skin folks who are creole.
A lot of the older more well established creole families are concerned with preserving that creole heritage. Some more than others. Whether they admit it or not, a lot of them do seem to think they are different than us, and I use "us" loosely. I was cool with this dude who could pass, his family is from New Orleans and they are almost all "passe blanc"( I'm dark like my grandmother, with wavy black hair) I honestly felt weird around those people, they were nice to me, but I felt like an outsider, especially around the older folks.
My lineage, as far as I know, would be considered creole, but I don't consider myself to be a creole. My maternal grandmother was a light skin creole mix, my great GF was from jamica. My paternal grandparents were indian and black mixed.
Creole means different things to different people, for ex I went to St Lucia on my honeymoon, and all the black people were called creoles, they spoke patois and that seemed to be what made them creole.