For group by state and type and group by type, state and relation, a threshold must be passed before any grouping happens - the Minimum components in a group. By default, the minimum group size is 2, this means that if there is one component of a certain type and health state in a view, then when the next component comes along that has the same state and type a component group will be created. If the threshold value is set higher, to 8 for example, then at least 8 components with the same state type (and possibly relations) would be required for a group to be created.