Help me identify my chicken

She is about 14 weeks now and when I got her (last photo) I was told she was a blue breasted brown leghorn.

She got this puff on her head in her ugly teen stage and it hasn’t gone away. I have a sneaking suspicion she might be a cream crested legbar instead.

If anyone knows what kind of chicken this is please let me know! 😊

(Ignore my olive egger in the fourth photo…)