CSharpier is pretty good for a prettier like feel: https://csharpier.com/
Prettier was relatively easy to adopt because most styles at the time were just eslint configurations and auto-formatters were scarce before Prettier. .NET has a long history of auto-formatters and most of them speak .editorconfig, so some interop would be handy, even if the goal isn't "perfect" interop. Just enough to build a pit of success for someone's first or second PR in a project before they get to that part of the Readme that says "install this thing in VS or Rider" or actually start to pay attention to the Workspace-recommended extensions in VS Code.