Out of curiosity, what did you run on Graviton? How did you define success?

What is your question? ARM supports SIMD through NEON

You can implement the intel intrinsics on the arm end, but NEON and AVX aren't exactly the same thing, so there's usually performance to be found.

I'm also not aware of any free SIMD profilers that work on ARM that hold a candle to vTune.

No profilers really hold a candle to vTune is the problem in general. I love the new AMD chips but uProf isn't in the same class as vTune and that is sad. I'm certain with better tools the AMD chips could be demolishing Intel by an even greater margin.

Writing a seoarate path for NEON is what would be needed. It's not like there are these magical SIMD functions (intrinsics) that work across architectures.