Based on that picture: He looks 100% Lab to me.
There is a softness about the eyes and the bump on the top of the head betray his Golden ancestry. (1st picture) If you trimmed that picture so that just the face showed, he is the spittin’ image of my current Golden, Max.
Check out the black Lab next to him. The black Lab head is flat across the top and he’s wider through the eyes. His gaze is more determined than a Golden who just wants to love you and be loved in return.
It’s a subtle difference, but I think brytlea picked up on it. I did too. You have to have lived with Goldens to understand.