I didn't have time this morning to give you this chart (had to have time to look it up in my bookmarks)...it is over simplified, but a breeder I trust recommended it to follow.
Color egg chart genetics:
https://www.backyardchickens.com/t/273489/lightbox/post/14660804/id/6710899
Egg genetics...
I could see him being a Cream Crested Legbar cross with Spitzhauben...because of the comb...."v" is incomplete dominant and I could believe the over large Legbar comb combined with the Spitzhauben comb might produce something looking like that.
Or he is Spitzhauben with something else.
Or...