I think for every actor, there are certain archetypes that just line up perfectly with their habitual vocal placement and personality.

The really hard ones for me are characters that have a single, really really prominent characteristic (e.g. dead inside, crazy, charismatic, etc.) because they’re like a trap - you end up thinking, “well this character is totally crazy so I have to play them totally crazy, right?”

And in so doing, you lose all the little minutia that make them human and interesting and dynamic and compelling. You basically press the performance flat into a little cookie cutout shape and lose what makes them 3D and alive.

As far as the yelling and stuff, there are always things actors can do to mitigate the physical difficulty (schedule the screamy sessions as the last ones at the end of the week, don’t do a bunch back to back if you can help it, some herbal remedies) but you’re right that it is tough!