All the colours listed are recessive ie "and whites" are recessive to the dominant "roans". "And tan" is also a recessive pattern in both solids and particolours. It's inevitable that the dominant colours and patterns will be more numerous than the recessives since a recessive colour can only be produced if both parents either are that colour/pattern or carry the gene for it. I don't think it has much to do with show ring popularity in the UK since show breeders make up only a small percentage of breeders producing puppies today & actually in the show ring, black and tan is quite popular here (there have been a number of recent top winners in this colour) and orange and white can also do well (we've had an orange and white show champion and another with CCs).
Fashion also plays a part as far as colours are concerned, especially with breeders breeding commercially for the pet market -sables and chocolate/livers are "in" with these sort of breeders but who knows, in a few years time, it will probably be something different