Inclusive fitness also includes the ability of those offspring to then support others

So I guess it's a combindation of direct and indirect fitness – just looking after the propogation of your genes (wehter that is siblings or you children)

Inclusive fitness is essentially a measure of activities that enhance gene propagation of your species. It depends on “personal” fitness (how many viable offspring you make) and how many “offspring equivalents” you raise/help (a mother cat taking in baby orphan cats). Inclusive fitness can also explain why an animal may engage in activities that harm itself but benefit its entire species (an animal being hunted makes loud noises to signal its friends that there’s a predator, but doing so compromises its own location to the predators).