They all show and explain atoms within matter.
Dalton's model showed the first supposed model of an atom. Later Thomson figured out the there are Protons and Neutrons using a Cathode ray tube. He drew a diagram that had both Protons and Neutrons inside the atom. It was later improved by Rutherford (Who discovered the Nucleus) and his student Chadwick to include what they supposedly thought the Nucleus was. Bohr then transformed the Rutherford diagram into a more simpler model showing the nucleus in the middle with only Protons and Neutrons and showed that the electrons "orbited" the Nucleus.
Source: Pearson Investigating Science 9