Mufasa ~ Simba > Scar >/>> Nala >> Pumba ~ Hyena > Rafiki
Mufasa was treat as the ruler of the pride, something a superior lion can become by overthrowing it's leader, yet Scar failed to do so and had to resort to schemes to become leader, making it apparent Mufasa > Scar. Simba ought to be comparable to his dad seeing as he seemed superior to Scar. Lionesses aren't as strong as male lions, so Nala's below them. As for Pumba, a Warthog, VS Hyena it can go either way, though a Warthog's tusks generally allow them to hold the advantage. A mandrill like Rafiki holds no unique factors that can allow him to hold his own against a warthog or hyena for too long unless relying on tools, so he ranks at the bottom.