I just remembered something:I got him from a feed store as a chick, (didn't plan on getting a bantam at that point
Some years ago, Ideal Poultry was offering Old English Game Bantams in "Cream Buttercup Pattern." They were meant to be the same pattern found on Buttercup chickens, but with the gold diluted to a pale cream shade, and Old English Game in size/comb type/body shape.
They aren't offering them now, and I'm having trouble finding photographs online.
I found one picture (not a photograph):
https://www.zazzle.com/old_english_cream_buttercups_postcard-239803888138774997
And someone in this thread apparently had a young one:
https://www.backyardchickens.com/threads/any-idea-wat-breed-this-is.749656/
(I cannot find a photograph of an adult male to compare with, so this is still just a guess.)