But in seriousness for lightsabers only.
Sidious > Dooku >= Mace with Grievous being >= Mace and < Dooku due a number of circumstances the main one being that Dooku was his teacher who knows Grievous's style intimately and has kept secret about his own ability from him as is noted in LoE. Mace >= Anakin and Anakin > Dooku due to a number of factors.