My guess was that he was purebred Angus and I would also guess that this bull is not excessively fat. He is in very good shape, and this is what an easy fleshing bull should look like in every day condition. I would like to clean him up a touch in his front end, however, some of this comes naturally with having some masculinity. I think some of the best female sires have been very masculine and also have lots of crest and front end to them. Take a look at the mature picture of SR Red Riders Drive ( Shorthorn bull). IMO, RRD produced some of the best females around, yet he was anything but pretty as a mature bull. I think this bull looks the same.
He has tremendous thickness, depth of rib and volume. He probably will sire some real ground sow daughters.... and some sons that look the same coming in from pasture as they did going out to pasture. I would use him in a heart beat.