Nested or Compact Class and Module naming style?

[mahdiar-naufal-shyftplan]

Hi, is there any specific style that you guys follow for class and module naming style, either nested or compact??
In the rubystyle guide they prefer nested due to surprising constant lookups

Using the scope resolution operator can lead to surprising constant lookups due to Ruby’s lexical scoping
ref: https://rubystyle.guide/#namespace-definition

example of nested:

class Foo
  class Bar
  end
end

example of compact:

class Foo::Bar
end