Very common. It looks like you have chocolate, and recessive yellow. The second photo could be a c-diluted chocolate or a mock chocolate, but if it has pink eyes then it's dove. The second one in the last photo could be agouti.
Recessive yellow can range from bright gold, to vibrant orange, to dark red, to even brown. It depends on the pheomelanin (yellow pigment) modifier genes. It is rare to have a darkly coloured one, and very common to have orange and yellow ones.