They all look like pullets to me. When I've had laced Wyandotte cockerels, they have a different pattern on the wings.
Edited to add a picture of my blue laced red wyandotte cockerels at about the same age as your golden laced. I realize they're different TYPES of wyandottes, but I can't find my GLW cockerel pictures.

See how the wings show more of a solid color and a little less lacing? That got more dramatic the older he got.

I wish I could remember how old he was in this picture, but he's only about 4 months old now, so he couldn't be too much older than yours.
Edited by Sphinx - 7/2/12 at 8:22pm