Exactly, the Predators are a species of individuals, so there's lots of room to explore the diversity that each of them would have.
I remember reading somewhere that Hish clans would fight because of disagreements in their culture, even something really trivial like how to take a trophy properly and this is something that has destroyed entire alliances between clans who tried to join together. We see differences in the movie 'Predators' between two clans and how they're implied to be in a blood feud.
I love this diversity. I love how Rage War says they got different languages like we do, they got difference accents and dialects like we do.
Another thing I picked up in Rage War was how Kalakta's clan had a bit of Celtic roots in their mannerisms which Isa Palant noted. Our languages have roots in older languages. The Predators have hunted here for a very long time and some may have been observing and picking up certain quirks and nuances that they liked and took home.
We even see this with "ooman", they must've liked the sound of the English word for 'human' and have adopted it into at least one of their languages. Others would have an entirely different name for us just how we have very different names for ourselves in different languages.
Have you played the AvP2010 game? In the Predator campaign, you hear bits of their language and it's incredibly alien to listen to. It's a lot like Rage War, where it's said humans cannot physically replicate some of their words, only Synthetics could do it due to being able to contort their throat muscles to do so.