@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "petType", visible = true)
@JsonSubTypes({
  @JsonSubTypes.Type(value = Cat.class, name = "Cat"),        // <--- should not be generated
  @JsonSubTypes.Type(value = Dog.class, name = "Dog"),        // <--- should not be generated
  @JsonSubTypes.Type(value = Lizard.class, name = "Lizard"),  // <--- should not be generated
  @JsonSubTypes.Type(value = Cat.class, name = "cat"),
  @JsonSubTypes.Type(value = Dog.class, name = "dog"),
  @JsonSubTypes.Type(value = Lizard.class, name = "lizard"),
})

public class Pet

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "petType", visible = true)
// vvvvvv This should not be generated at all vvvv
@JsonSubTypes({
  @JsonSubTypes.Type(value = Cat.class, name = "cat"),
  @JsonSubTypes.Type(value = Dog.class, name = "dog"),
  @JsonSubTypes.Type(value = Lizard.class, name = "lizard"),
})

public class Cat extends Pet {

static {
  // Initialize and register the discriminator mappings.
  Map<String, Class<?>> mappings = new HashMap<String, Class<?>>();
  mappings.put("Cat", Cat.class);
  mappings.put("Dog", Dog.class);
  mappings.put("Lizard", Lizard.class);
  mappings.put("cat", Cat.class);
  mappings.put("dog", Dog.class);
  mappings.put("lizard", Lizard.class);
  mappings.put("Pet", Pet.class);
  JSON.registerDiscriminator(Pet.class, "petType", mappings);
}

static {
  // Initialize and register the discriminator mappings.
  Map<String, Class<?>> mappings = new HashMap<String, Class<?>>();
  mappings.put("cat", Cat.class);
  mappings.put("dog", Dog.class);
  mappings.put("lizard", Lizard.class);
  mappings.put("Cat", Cat.class);
  JSON.registerDiscriminator(Cat.class, "petType", mappings);
}