Can I use "I never heard a voice more crueler" ?

I've encountered a sentence in a story, which is "I never heard a voice more cruel, cold, and ugly."

So I'm wondering why there is a 'more' followed by adjectives 'cruel, cold, and ugly', since crueler is the right form as I thought.

After searching on Google, I know 'more cruel', 'crueller', 'crueler' are all accepted.

So, can I write that sentence in different ways?

1. I never heard a voice crueler, colder, and uglier.

Is it right?

2. I never heard a voice more cold and ugly.

Is it right?

3. I never heard a voice more crueler, colder and uglier.

Is it right?

What's the most common way to express?