Looks kind of like an ee or maybe even olive egger type ee! (MaransxAmeraucana or EE)I'm not sure either. It's super flat. We have 2 other EE's and their comb did not look like this at this age... that is part of why she is an enigma.
Here is a better close up of the comb.
View attachment 1262294
However, she did start squatting for me TODAY! So hopefully we will see an egg soon!!

