This sky shader is an alternative to Blender's default sky shaders, it offers more flexibility as it doesn't rely on realism.

Set the amount of clouds in the sky

Full control over colors to let you adjust the ideal lighting for each scene

Support for HDRIs and individual lighting strength settings for the objects and the sky, allowing to keep the sky darker and preserve the illumination of the scene

You can animate the clouds movement. By default the movement automatically syncs with the current frame, so you just have to set the speed

Check out the documentation for usage details.