Ask HN: Need help from outside in establishing initial equity picture

I am wondering if there is such a thing as a neutral 3rd party service that provides an outside assessment to help a team that is ready to incorporate come to a decision on equity division?

It's a scenario where there are different levels and types of input, where it's very positive, and the general spirit is it'd be good to get a neutral/outside take on how to set things up rather than haggle or negotiate internally.

Been trying to get an answer via Google search but have not able to make headway.