I'm sure this varies so I came to this same scenario at a high end sushi restaraunt where there is a waitress, a sushi chef, a non-sushi cheff, hostess, bartender etc and every single one of those people are working on your dinner (closer to $100 per person, but still).

I wasn't sure and I had hoped the tip worked as you said getting spread around (at least to the sushi chef who takes the sushi order directly and drops it at your table). I figured the hostess would tell me straight up since she's not taking my tip directly and doesn't benefit greatly one way or another.

She made it clear to me. Don't expect anyone beyond the waitress to get a meaningful share. I presume she meant either the sharing was very minimal or the waitress was likely to pocket most of it before reporting the amount to the people she may obliged to share it with. That didn't sit well with me but I have a feeling she was telling the truth, especially in light of the fact that the waitress would have every incentive especially with cash to just pocket the money and tell everybody else they were stiffed or got 5% or whatever.