Specific models have a style, ChatGPT has a style, Llama has a style, but there's nothing about the technique that has a style. If you run any of the vast variants emerging out there and tweak the sampling you can get absolutely wildly creative and divergent tones. Each model does seem to have a personality, but with fine tuning you can get one to write in any style you want.
There's a cadence that humans have that isn't matched. It's close at times until like a juke in basketball you can find a non human response. Go off script and computers can't compensate.