Ruby on Rails static analyzer to suggest ways to divide up a large monorepo into more manageable chunks?

I'm trying to find a static analysis tool that could review a large Ruby on Rails monorepo -- 2300 files, 115k lines of code -- and suggest how to divide it up into smaller libraries and/or microservices.

It's going to be a pain to do this by hand...hoping there's a utility that will suggest where to put the "scalpel".