Top center and top right are MTH Premier plastic cabeese. I think the Railkings are the same in a yellow box. I haven't actually seen a Railking version but your picture shows truss rods which are correct for the caboose but missing from the Premier versions. Trucks are better but still not correct for these as they should be T section Bettendorfs. The only NYC 19000 cabeese that have the correct trucks are Lionel's plastic NYC caboose. Its also the only one save 2 rail scale versions that have truss rods. For some reason all the rest of Lionel's and all of MTH's have the wrong trucks and lack truss rods.
The cabeese in center middle and center lower are MTH diecast Railkings. Nice superstructure but very wrong trucks being roller bearing. I have swapped out those trucks with Lionel's T section and relocated them inside the steps where they belong.
Pete