Absolutely. While I do know people (they’re all Italian) with almost 4A textures, it’s an extremely rare curl type among white Caucasians.
According to some research, about 45% of white Europeans have straight hair, about 40% have waves (S-shaped ‘curls’), and only 15% have curly hair (usually a combination of S- & loose spiral-shaped curls). People with coils (so a tight 3C to 4A texture) are rather rare. Of that 15% of curly-haired white Europeans, maybe less than 10% have coils.
Now this 
My mom (white, straight-haired woman) is the first to say my hair texture is basically an ‘afro’, whatever that means, and every time I have to try to explain how it looks nothing like (most of) black people’s natural hair.
No mom, it’s just a 3B. That belongs to the loose curls pattern. I’m 2 letters away from the coils 