Dad Daddy Pop Pops Daddy Poppie Pa are all synonymous with father. There's an implied affection because of informality. If the young child is calling his parent father this implies formality and perhaps a lack of warmth or emotion.
Big Daddy, Sugar Daddy, Big Poppa, Daddy O, Dads Da.
The following were movie which ones do you think were mire formal .
Poppie
Da
Big Daddy
The Good Father
Like a Lady of the Night.