Question for ALL Maine Coon lovers: what kind of trills do your cats make?

Two of my current four cats trill, chirrup, squeak, even cackle on occasion, and neither of them are full Maine Coons, one is just a DSH ginger tabby. The most common noise he makes is a broken gargling, cackling noise. The other one may be a partial Maine Coon, according to his body build, and he sticks solely to trills, chirrups, and even some false-meows (He opens his mouth as if to meow, but lets no sound escape. It's a trick he picked up from our only current girl, who learned that it meant she sounded 'pathetic' if she were begging for food.) The last of our current four here has a very rough, deep, and ridiculously loud meow. He honestly sounds like he's a heavy smoker, although he has never been in a smoker's house in his life that we know of.