Good to see your new pics. What you have there are some beautiful birds and though I would have to say they are crossbred bantams that don't make'm bad peeps ! Pardon the pun. I love the Old English and these being crossbreds will have the added benefit of hybrid vigor so they may even better...
It very well could be a black breasted red Old English bantam roo but since he is so dark there is a distinct possibility that he is in fact a Mahogany O.E. bantam.