They look like gold lace to me, that's one pretty boy you have there!!
I have one or two gold lace that have the some white in them. Does not mean they are not gold lace just that they are not SOP. Here are some of mine ~
I just didn't know because of how much white was coming through on the roo and the bigger hen doesn't have a full crest like the smaller one. Thanks. Some very nice looking birds you have.
I've just made your pic bigger and yes she does not have a big crest. How old are they? Could she have been trimmed? Is she a lot bigger than the other?
You could have a standard and bantam size in the 2 girls.
They should be a little over a year old that is what I was told when I bought them I was also told they were bantys. They are over 6 months because they are both laying.
Yes she is BIG compared to your other girl and bigger than your roo. Could be a mix with a polish because of the crest that she does have.
Guessing what breed I do not know
There are a number of breeds with a crest, to say a chicken has polish in it because of a crest would be incorrect.
She looks like a hatchery type Golden Brabanter.