In what order are the config files loaded for Rails?

Rails 6.0 Updated Nov 2019: Initialization Process and Configuration Same as Rails 5.2 Rails 5.2 Updated Nov 2019:Initialization Process Configuration Launch railties/exe/rails railties/lib/rails/app_loader.rb bin/rails config/boot.rb rails/commands.rb rails/command.rb actionpack/lib/action_dispatch.rb rails/commands/server/server_command.rb Rack: lib/rack/server.rb config/application Rails::Serve