Just looked her up on Wiki. Apparently she was blinded before being executed and was frequently represented in paintings with her eyes on a plate. I reckon that's why your receipt calls for raisins in the swirls.
Crikey! That sounds a plausible explanation, although some of the other traditional shapes also have raisins inserted in the swirls and the number of swirls varies according to the shape.
This is what Magnus Nilsson has to say on the matter:
"This sweet saffron wheat dough is rolled out into many shapes, all having different names. The most common version - and the one favoured by industry, I guess for its simplicity - is the
julgalt, or Christmas boar. This is often wrongly named
lussekatt, or 'Saint Lucy's Cat', which, as you can plainly see from the illustration on the right, is a completely different shape."
St Lucy’s Day bun shapes by
citoyen, on Flickr
None of these other shapes even exist according to the internet. If you look up "lussekatt" you only get pictures of the S-shaped buns.