No - B-B was used on Hydraulic locos like Warships and Hymeks; Bo-Bo on diesel electrics like class 20, 23, 24, 25 etc.
It's to do with the drive arrangements - sharrafter go and Google again, 'cos the memory is failing - salinity creeps in again
Edit - Bo-Bo is where a two wheel bogie has drive by a traction motor to each axle; therefore B-B would be where there is some sort of layshaft from a prime mover and the axles are coupled mechanically - source Wiki.
Europe is different, but USA & UK agree on this one .............. for once
GPs are always Bo-Bo and SDs co-co although I wouldn't be surprised if someone can find an exception. All you need is a new body, bogies and power trucks to get a fine loco. I could have got you some when I visited the Charles Ro shop but that was back in June .